SB2025032174 - openEuler 24.03 LTS SP1 update for openssh

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Man-in-the-Middle (MitM) attack (CVE-ID: CVE-2025-26465)

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to incorrect processing of user-supplied data in ssh(1). A remote attacker can perform server impersonation when VerifyHostKeyDNS enabled.

2) Input validation error (CVE-ID: CVE-2025-26466)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input related to SSH2_MSG_PING handling in sshd(8). A remote attacker can send specially crafted packets to the server and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2025-1314