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CVE-2026-0966

Опубликовано: 31 мар. 2026
Источник: msrc
CVSS3: 6.5
EPSS Низкий

Описание

Libssh: buffer underflow in ssh_get_hexa() on invalid input

EPSS

Процентиль: 44%
0.00582
Низкий

6.5 Medium

CVSS3

Связанные уязвимости

CVSS3: 8.2
ubuntu
4 месяца назад

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.

CVSS3: 6.5
redhat
6 месяцев назад

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.

CVSS3: 8.2
nvd
4 месяца назад

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.

CVSS3: 8.2
debian
4 месяца назад

A flaw was found in libssh. The API function `ssh_get_hexa()` is vulne ...

CVSS3: 6.5
github
4 месяца назад

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.

EPSS

Процентиль: 44%
0.00582
Низкий

6.5 Medium

CVSS3