vulnerability
Oracle Linux: CVE-2025-26465: ELSA-2025-6993: openssh security update (MODERATE)
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
7 | (AV:N/AC:H/Au:N/C:C/I:C/A:N) | Feb 17, 2025 | May 26, 2025 | May 26, 2025 |
Severity
7
CVSS
(AV:N/AC:H/Au:N/C:C/I:C/A:N)
Published
Feb 17, 2025
Added
May 26, 2025
Modified
May 26, 2025
Description
A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.
Solution(s)
oracle-linux-upgrade-opensshoracle-linux-upgrade-openssh-askpassoracle-linux-upgrade-openssh-clientsoracle-linux-upgrade-openssh-keycatoracle-linux-upgrade-openssh-serveroracle-linux-upgrade-pam-ssh-agent-auth

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