{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"High" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"libssh2 security update", "category":"general", "title":"Synopsis" }, { "text":"An update for libssh2 is now available for openEuler-24.03-LTS-SP1", "category":"general", "title":"Summary" }, { "text":"libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS(22), SECSH-USERAUTH(25), SECSH-CONNECTION(23), SECSH-ARCH(20), SECSH-FILEXFER(06)*, SECSH-DHGEX(04), and SECSH-NUMBERS(10).\n\nSecurity Fix(es):\n\nlibssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count from a publickey-subsystem response and uses it in the allocation num_attrs * sizeof(libssh2_publickey_attribute) without bounds checking, so on 32-bit platforms the multiplication overflows to an undersized buffer. A malicious SSH server can then drive the attribute-parsing loop to write past the allocation, causing a heap buffer overflow in a connecting libssh2 client.(CVE-2026-58050)\n\nlibssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftp_open() function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session. When a server responds to SSH_FXP_OPEN with SSH_FXP_STATUS containing FX_OK, the response data buffer is freed, and if a subsequent sftp_packet_require() call returns a specific error such as LIBSSH2_ERROR_CHANNEL_PACKET_EXCEEDED, the same pointer is freed a second time, enabling tcache dup conditions on glibc systems that allow overlapping allocations and function pointer overwrites.(CVE-2026-66032)\n\nlibssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2_cipher_crypt() function in src/openssl.c that allows a malicious SSH server to crash any connecting client by negotiating AES-GCM ciphers during handshake. Attackers can exploit the underflow in the expression computing blocksize minus aadlen minus authentication tag length to trigger an out-of-bounds read and a memcpy call with a near-SIZE_MAX length argument, causing immediate process crash before any authentication occurs.(CVE-2026-66033)\n\nlibssh2 through 1.11.1, fixed in commit a13bb6c, contains a missing bounds check vulnerability that allows a malicious SSH server to trigger an arbitrary-length heap out-of-bounds read and a free of an uninitialized pointer via the publickey subsystem. In libssh2_publickey_list_fetch(), the version 1 response parser reads a server-controlled comment_len value and advances the parse pointer without verifying sufficient bytes remain in the buffer, causing the out-of-bounds read to leak heap pointers from adjacent allocations defeating ASLR, followed by heap allocator state corruption when the error cleanup path frees an uninitialized pointer from a non-zeroed realloc() region.(CVE-2026-66034)\n\nlibssh2 through 1.11.1, fixed in commit 42e33d8, contains a pre-authentication heap buffer overflow vulnerability that allows a malicious SSH server to corrupt heap metadata in any connecting client by sending a packet with a packet_length smaller than the cipher's block size during Encrypt-then-MAC cipher negotiation. In the fullpacket() function in src/transport.c, the ETM path allocates a buffer of packet_length bytes but copies blocksize minus one bytes via memcpy, causing an overflow that on 32-bit glibc writes attacker-controlled bytes into an adjacent chunk's SIZE field, enabling tcache bin confusion, overlapping live objects, and function pointer overwrite during the session handshake before authentication.(CVE-2026-66035)", "category":"general", "title":"Description" }, { "text":"An update for libssh2 is now available for openEuler-24.03-LTS-SP1.\n\nopenEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.", "category":"general", "title":"Topic" }, { "text":"High", "category":"general", "title":"Severity" }, { "text":"libssh2", "category":"general", "title":"Affected Component" } ], "publisher":{ "issuing_authority":"openEuler security committee", "name":"openEuler", "namespace":"https://www.openeuler.org", "contact_details":"openeuler-security@openeuler.org", "category":"vendor" }, "references":[ { "summary":"openEuler-SA-2026-3395", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3395" }, { "summary":"CVE-2026-58050", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-58050&packageName=libssh2" }, { "summary":"CVE-2026-66032", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-66032&packageName=libssh2" }, { "summary":"CVE-2026-66033", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-66033&packageName=libssh2" }, { "summary":"CVE-2026-66034", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-66034&packageName=libssh2" }, { "summary":"CVE-2026-66035", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-66035&packageName=libssh2" }, { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58050" }, { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66032" }, { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66033" }, { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66034" }, { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66035" }, { "summary":"openEuler-SA-2026-3395 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/advisories/2026/csaf-openeuler-sa-2026-3395.json" } ], "title":"An update for libssh2 is now available for openEuler-24.03-LTS-SP1", "tracking":{ "initial_release_date":"2026-08-19T11:03:38+08:00", "revision_history":[ { "date":"2026-08-19T11:03:38+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2026-08-19T11:03:38+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2026-08-19T11:03:38+08:00", "id":"openEuler-SA-2026-3395", "version":"1.0.0", "status":"final" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"openEuler-24.03-LTS-SP1", "name":"openEuler-24.03-LTS-SP1" }, "name":"openEuler-24.03-LTS-SP1", "category":"product_version" } ], "category":"product_name" }, { "name":"aarch64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-1.11.0-10.oe2403sp1.aarch64.rpm", "name":"libssh2-1.11.0-10.oe2403sp1.aarch64.rpm" }, "name":"libssh2-1.11.0-10.oe2403sp1.aarch64.rpm", "category":"product_version" }, { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64.rpm", "name":"libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64.rpm" }, "name":"libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64.rpm", "category":"product_version" }, { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64.rpm", "name":"libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64.rpm" }, "name":"libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64.rpm", "category":"product_version" }, { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-devel-1.11.0-10.oe2403sp1.aarch64.rpm", "name":"libssh2-devel-1.11.0-10.oe2403sp1.aarch64.rpm" }, "name":"libssh2-devel-1.11.0-10.oe2403sp1.aarch64.rpm", "category":"product_version" } ], "category":"architecture" }, { "name":"src", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-1.11.0-10.oe2403sp1.src.rpm", "name":"libssh2-1.11.0-10.oe2403sp1.src.rpm" }, "name":"libssh2-1.11.0-10.oe2403sp1.src.rpm", "category":"product_version" } ], "category":"architecture" }, { "name":"x86_64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-1.11.0-10.oe2403sp1.x86_64.rpm", "name":"libssh2-1.11.0-10.oe2403sp1.x86_64.rpm" }, "name":"libssh2-1.11.0-10.oe2403sp1.x86_64.rpm", "category":"product_version" }, { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64.rpm", "name":"libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64.rpm" }, "name":"libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64.rpm", "category":"product_version" }, { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64.rpm", "name":"libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64.rpm" }, "name":"libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64.rpm", "category":"product_version" }, { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-devel-1.11.0-10.oe2403sp1.x86_64.rpm", "name":"libssh2-devel-1.11.0-10.oe2403sp1.x86_64.rpm" }, "name":"libssh2-devel-1.11.0-10.oe2403sp1.x86_64.rpm", "category":"product_version" } ], "category":"architecture" }, { "name":"noarch", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"libssh2-help-1.11.0-10.oe2403sp1.noarch.rpm", "name":"libssh2-help-1.11.0-10.oe2403sp1.noarch.rpm" }, "name":"libssh2-help-1.11.0-10.oe2403sp1.noarch.rpm", "category":"product_version" } ], "category":"architecture" } ] } ], "relationships":[ { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-1.11.0-10.oe2403sp1.aarch64.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "name":"libssh2-1.11.0-10.oe2403sp1.aarch64 as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "name":"libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64 as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "name":"libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64 as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-devel-1.11.0-10.oe2403sp1.aarch64.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "name":"libssh2-devel-1.11.0-10.oe2403sp1.aarch64 as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-1.11.0-10.oe2403sp1.src.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "name":"libssh2-1.11.0-10.oe2403sp1.src as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-1.11.0-10.oe2403sp1.x86_64.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "name":"libssh2-1.11.0-10.oe2403sp1.x86_64 as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "name":"libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64 as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "name":"libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64 as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-devel-1.11.0-10.oe2403sp1.x86_64.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "name":"libssh2-devel-1.11.0-10.oe2403sp1.x86_64 as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP1", "product_reference":"libssh2-help-1.11.0-10.oe2403sp1.noarch.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch", "name":"libssh2-help-1.11.0-10.oe2403sp1.noarch as a component of openEuler-24.03-LTS-SP1" }, "category":"default_component_of" } ] }, "vulnerabilities":[ { "cve":"CVE-2026-58050", "notes":[ { "text":"libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count from a publickey-subsystem response and uses it in the allocation num_attrs * sizeof(libssh2_publickey_attribute) without bounds checking, so on 32-bit platforms the multiplication overflows to an undersized buffer. A malicious SSH server can then drive the attribute-parsing loop to write past the allocation, causing a heap buffer overflow in a connecting libssh2 client.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] }, "remediations":[ { "product_ids":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ], "details":"libssh2 security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3395" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"HIGH", "baseScore":7.5, "vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version":"3.1" }, "products":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] } ], "threats":[ { "details":"High", "category":"impact" } ], "title":"CVE-2026-58050" }, { "cve":"CVE-2026-66032", "notes":[ { "text":"libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftp_open() function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session. When a server responds to SSH_FXP_OPEN with SSH_FXP_STATUS containing FX_OK, the response data buffer is freed, and if a subsequent sftp_packet_require() call returns a specific error such as LIBSSH2_ERROR_CHANNEL_PACKET_EXCEEDED, the same pointer is freed a second time, enabling tcache dup conditions on glibc systems that allow overlapping allocations and function pointer overwrites.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] }, "remediations":[ { "product_ids":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ], "details":"libssh2 security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3395" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"HIGH", "baseScore":8.8, "vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version":"3.1" }, "products":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] } ], "threats":[ { "details":"High", "category":"impact" } ], "title":"CVE-2026-66032" }, { "cve":"CVE-2026-66033", "notes":[ { "text":"libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2_cipher_crypt() function in src/openssl.c that allows a malicious SSH server to crash any connecting client by negotiating AES-GCM ciphers during handshake. Attackers can exploit the underflow in the expression computing blocksize minus aadlen minus authentication tag length to trigger an out-of-bounds read and a memcpy call with a near-SIZE_MAX length argument, causing immediate process crash before any authentication occurs.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] }, "remediations":[ { "product_ids":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ], "details":"libssh2 security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3395" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"HIGH", "baseScore":7.5, "vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version":"3.1" }, "products":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] } ], "threats":[ { "details":"High", "category":"impact" } ], "title":"CVE-2026-66033" }, { "cve":"CVE-2026-66034", "notes":[ { "text":"libssh2 through 1.11.1, fixed in commit a13bb6c, contains a missing bounds check vulnerability that allows a malicious SSH server to trigger an arbitrary-length heap out-of-bounds read and a free of an uninitialized pointer via the publickey subsystem. In libssh2_publickey_list_fetch(), the version 1 response parser reads a server-controlled comment_len value and advances the parse pointer without verifying sufficient bytes remain in the buffer, causing the out-of-bounds read to leak heap pointers from adjacent allocations defeating ASLR, followed by heap allocator state corruption when the error cleanup path frees an uninitialized pointer from a non-zeroed realloc() region.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] }, "remediations":[ { "product_ids":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ], "details":"libssh2 security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3395" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"HIGH", "baseScore":7.5, "vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version":"3.1" }, "products":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] } ], "threats":[ { "details":"High", "category":"impact" } ], "title":"CVE-2026-66034" }, { "cve":"CVE-2026-66035", "notes":[ { "text":"libssh2 through 1.11.1, fixed in commit 42e33d8, contains a pre-authentication heap buffer overflow vulnerability that allows a malicious SSH server to corrupt heap metadata in any connecting client by sending a packet with a packet_length smaller than the cipher's block size during Encrypt-then-MAC cipher negotiation. In the fullpacket() function in src/transport.c, the ETM path allocates a buffer of packet_length bytes but copies blocksize minus one bytes via memcpy, causing an overflow that on 32-bit glibc writes attacker-controlled bytes into an adjacent chunk's SIZE field, enabling tcache bin confusion, overlapping live objects, and function pointer overwrite during the session handshake before authentication.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] }, "remediations":[ { "product_ids":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ], "details":"libssh2 security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3395" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"HIGH", "baseScore":7.5, "vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version":"3.1" }, "products":[ "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.src", "openEuler-24.03-LTS-SP1:libssh2-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debuginfo-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-debugsource-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-devel-1.11.0-10.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:libssh2-help-1.11.0-10.oe2403sp1.noarch" ] } ], "threats":[ { "details":"High", "category":"impact" } ], "title":"CVE-2026-66035" } ] }