Описание
Security update for libssh
This update for libssh fixes the following issues:
- CVE-2026-3731: denial of service via out-of-bounds read in SFTP extension name handler (bsc#1259377).
- 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 a denial of service (bsc#1258081).
- CVE-2026-0968: out-of-bounds read in
sftp_parse_longname()(bsc#1258080).
Список пакетов
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
Ссылки
- Link for SUSE-SU-2026:1344-1
- E-Mail link for SUSE-SU-2026:1344-1
- SUSE Security Ratings
- SUSE Bug 1258045
- SUSE Bug 1258049
- SUSE Bug 1258054
- SUSE Bug 1258080
- SUSE Bug 1258081
- SUSE Bug 1259377
- 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
- SUSE CVE CVE-2026-3731 page
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
A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service 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
Описание
A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.
Затронутые продукты
Ссылки
- CVE-2026-3731
- SUSE Bug 1259377