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Debian Security Advisory DSA-5868-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
February 18, 2025                     https://www.debian.org/security/faq
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Package        : openssh
CVE ID         : CVE-2025-26465

The Qualys Threat Research Unit (TRU) discovered that the OpenSSH client
is vulnerable to a machine-in-the-middle attack if the VerifyHostKeyDNS
option is enabled (disabled by default).

Details can be found in the Qualys advisory at
https://www.qualys.com/2025/02/18/openssh-mitm-dos.txt

For the stable distribution (bookworm), this problem has been fixed in
version 1:9.2p1-2+deb12u5.

We recommend that you upgrade your openssh packages.

For the detailed security status of openssh please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/openssh

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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