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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:HLibssh
APPLibssh< 0.11.4Red Hat Enterprise Linux
OSRedhat10.08.09.0Red Hat Hardened Images
APPRedhatall versionsRed Hat OpenShift Container Platform
APPRedhat4.0
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