Описание
Security update for libssh
This update for libssh fixes the following issues:
- Update to version 0.11.4:
- CVE-2026-0964: SCP Protocol Path Traversal in ssh_scp_pull_request() (bsc#1258049)
- CVE-2026-0965: Possible Denial of Service when parsing unexpected configuration files (bsc#1258045)
- CVE-2026-0966: Buffer underflow in ssh_get_hexa() on invalid input (bsc#1258054)
- CVE-2026-0967: Specially crafted patterns could cause DoS (bsc#1258081)
- CVE-2026-0968: OOB Read in sftp_parse_longname() (bsc#1258080)
- CVE-2025-8114: Fix NULL pointer dereference after allocation failure (bsc#1246974)
- CVE-2025-8277: Fix memory leak of ephemeral key pair during repeated wrong KEX (bsc#1249375)
Список пакетов
openSUSE Leap 16.0
Ссылки
- SUSE Security Ratings
- SUSE Bug 1246974
- SUSE Bug 1249375
- SUSE Bug 1258045
- SUSE Bug 1258049
- SUSE Bug 1258054
- SUSE Bug 1258080
- SUSE Bug 1258081
- SUSE CVE CVE-2025-8114 page
- SUSE CVE CVE-2025-8277 page
- SUSE CVE CVE-2026-0964 page
- SUSE CVE CVE-2026-0965 page
- SUSE CVE CVE-2026-0966 page
- SUSE CVE CVE-2026-0967 page
- SUSE CVE CVE-2026-0968 page
Описание
A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.
Затронутые продукты
Ссылки
- CVE-2025-8114
- SUSE Bug 1246974
Описание
A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.
Затронутые продукты
Ссылки
- CVE-2025-8277
- SUSE Bug 1249375
Описание
A malicious SCP server can send unexpected paths that could make the client application override local files outside of working directory. This could be misused to create malicious executable or configuration files and make the user execute them under specific consequences. This is the same issue as in OpenSSH, tracked as CVE-2019-6111.
Затронутые продукты
Ссылки
- CVE-2026-0964
- SUSE Bug 1258049
Описание
A flaw was found in libssh where it can attempt to open arbitrary files during configuration parsing. A local attacker can exploit this by providing a malicious configuration file or when the system is misconfigured. This vulnerability could lead to a Denial of Service (DoS) by causing the system to try and access dangerous files, such as block devices or large system files, which can disrupt normal operations.
Затронутые продукты
Ссылки
- CVE-2026-0965
- SUSE Bug 1258045
Описание
The API function `ssh_get_hexa()` is vulnerable, when 0-lenght input is provided to this function. This function is used internally in `ssh_get_fingerprint_hash()` and `ssh_print_hexa()` (deprecated), which is vulnerable to the same input (length is provided by the calling application). The function is also used internally in the gssapi code for logging the OIDs received by the server during GSSAPI authentication. This could be triggered remotely, when the server allows GSSAPI authentication and logging verbosity is set at least to SSH_LOG_PACKET (3). This could cause self-DoS of the per-connection daemon process.
Затронутые продукты
Ссылки
- CVE-2026-0966
- SUSE Bug 1258054
Описание
A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.
Затронутые продукты
Ссылки
- CVE-2026-0967
- SUSE Bug 1258081
Описание
A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes.
Затронутые продукты
Ссылки
- CVE-2026-0968
- SUSE Bug 1258080