========================================================================== Ubuntu Security Notice USN-7270-1 February 18, 2025
openssh vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in OpenSSH. Software Description: - openssh: secure shell (SSH) for secure access to remote machines Details: It was discovered that the OpenSSH client incorrectly handled the non-default VerifyHostKeyDNS option. If that option were enabled, an attacker could possibly impersonate a server by completely bypassing the server identity check. (CVE-2025-26465) It was discovered that OpenSSH incorrectly handled the transport-level ping facility. A remote attacker could possibly use this issue to cause OpenSSH clients and servers to consume resources, leading to a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2025-26466) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.10 openssh-client 1:9.7p1-7ubuntu4.2 openssh-server 1:9.7p1-7ubuntu4.2 Ubuntu 24.04 LTS openssh-client 1:9.6p1-3ubuntu13.8 openssh-server 1:9.6p1-3ubuntu13.8 Ubuntu 22.04 LTS openssh-client 1:8.9p1-3ubuntu0.11 openssh-server 1:8.9p1-3ubuntu0.11 Ubuntu 20.04 LTS openssh-client 1:8.2p1-4ubuntu0.12 openssh-server 1:8.2p1-4ubuntu0.12 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7270-1 CVE-2025-26465, CVE-2025-26466 Package Information: https://launchpad.net/ubuntu/+source/openssh/1:9.7p1-7ubuntu4.2 https://launchpad.net/ubuntu/+source/openssh/1:9.6p1-3ubuntu13.8 https://launchpad.net/ubuntu/+source/openssh/1:8.9p1-3ubuntu0.11 https://launchpad.net/ubuntu/+source/openssh/1:8.2p1-4ubuntu0.12
OpenPGP_signature.asc
Description: OpenPGP digital signature
