A flaw was found in libssh

Overview

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.

Affected

• libssh = 0.12.0
• hardened_images
• enterprise_linux = 10.0
• enterprise_linux = 10.2
• enterprise_linux_for_els = 10.2
• enterprise_linux_for_eus = 10.2
• enterprise_linux_for_ibm_z_systems = 10.0
• enterprise_linux_for_ibm_z_systems = 10.2
• enterprise_linux_for_ibm_z_systems_els = 10.2
• enterprise_linux_for_ibm_z_systems_eus = 10.2
• enterprise_linux_for_power_little_endian = 10.0
• enterprise_linux_for_power_little_endian = 10.2
• enterprise_linux_for_power_little_endian_els = 10.2
• enterprise_linux_for_power_little_endian_eus = 10.2

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.