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Package "openssh-server"

Name: openssh-server

Description:

secure shell (SSH) server, for secure access from remote machines
Latest version: 1:8.9p1-3ubuntu0.15
Release: jammy (22.04)
Level: updates
Repository: main
Head package: openssh
Homepage: http://www.openssh.com/

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Other versions of "openssh-server" in Jammy

Repository Area Version
base main 1:8.9p1-3
security main 1:8.9p1-3ubuntu0.15

Changelog

Version: 1:8.9p1-3ubuntu0.15 2026-04-29 16:08:59 UTC

  openssh (1:8.9p1-3ubuntu0.15) jammy-security; urgency=medium

  * SECURITY UPDATE: unexpected scp setuid and setgid
    - debian/patches/CVE-2026-35385.patch: clear setuid/setgid bits from
      downloaded files in scp.c.
    - CVE-2026-35385
  * SECURITY UPDATE: command execution via shell metacharacters in username
    - debian/patches/CVE-2026-35386-pre1.patch: apply validity rules on
      ProxyJump usernames and hostnames in readconf.c, readconf.h, ssh.c.
    - debian/patches/CVE-2026-35386.patch: move username check earlier in
      ssh.c.
    - CVE-2026-35386
  * SECURITY UPDATE: use of unintended ECDSA algorithms
    - debian/patches/CVE-2026-35387_35414.patch: correctly match ECDSA
      signature algorithms against algorithm allowlists in
      auth2-hostbased.c, auth2-pubkey.c, sshconnect2.c.
    - CVE-2026-35387
  * SECURITY UPDATE: missing connection multiplexing confirmation
    - debian/patches/CVE-2026-35388.patch: add missing askpass check in
      mux.c.
    - CVE-2026-35388
  * SECURITY UPDATE: authorized_keys principals option mishandling
    - debian/patches/CVE-2026-35387_35414.patch: check for commas in
      auth2-pubkey.c.
    - CVE-2026-35414

 -- Marc Deslauriers <email address hidden> Mon, 27 Apr 2026 20:38:10 -0400
Source diff to previous version
CVE-2026-35385 In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download
CVE-2026-35386 In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the
CVE-2026-35387 OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is
CVE-2026-35388 OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.
CVE-2026-35414 OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certific

Version: 1:8.9p1-3ubuntu0.14 2026-03-13 12:07:58 UTC

  openssh (1:8.9p1-3ubuntu0.14) jammy-security; urgency=medium

  * SECURITY UPDATE: GSSAPI Key Exchange issue
    - debian/patches/gssapi.patch: replace incorrect use of
      sshpkt_disconnect() with ssh_packet_disconnect() and properly
      initialize some vars.
    - CVE-2026-3497
  * SECURITY UPDATE: Untrusted control characters in usernames
    - debian/patches/CVE-2025-61984.patch: refuse usernames that include
      control characters in ssh.c.
    - CVE-2025-61984
  * SECURITY UPDATE: Code execution in ProxyCommand via NULL character
    - debian/patches/CVE-2025-61985.patch: don't allow \0 characters in
      url-encoded strings in misc.c.
    - CVE-2025-61985

 -- Marc Deslauriers <email address hidden> Wed, 04 Mar 2026 12:55:04 -0500
Source diff to previous version
CVE-2026-3497 Vulnerability in the OpenSSH GSSAPI delta included in various Linux di ...
CVE-2025-61984 ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code
CVE-2025-61985 ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used.

Version: 1:8.9p1-3ubuntu0.13 2025-04-24 17:07:30 UTC

  openssh (1:8.9p1-3ubuntu0.13) jammy-security; urgency=medium

  * SECURITY UPDATE: incorrect DisableForwarding directive behaviour
    - debian/patches/CVE-2025-32728.patch: fix logic error in session.c.
    - CVE-2025-32728

 -- Marc Deslauriers <email address hidden> Fri, 11 Apr 2025 08:05:47 -0400
Source diff to previous version
CVE-2025-32728 In sshd in OpenSSH before 10.0, the DisableForwarding directive does not adhere to the documentation stating that it disables X11 and agent forwardin

Version: 1:8.9p1-3ubuntu0.11 2025-02-18 22:07:17 UTC

  openssh (1:8.9p1-3ubuntu0.11) jammy-security; urgency=medium

  * SECURITY UPDATE: MitM with VerifyHostKeyDNS option
    - debian/patches/CVE-2025-26465.patch: fix error code handling in
      krl.c, ssh-agent.c, ssh-sk-client.c, sshconnect2.c, sshsig.c.
    - CVE-2025-26465

 -- Marc Deslauriers <email address hidden> Tue, 11 Feb 2025 08:51:51 -0500
Source diff to previous version
CVE-2025-26465 MitM

Version: 1:8.9p1-3ubuntu0.10 2024-07-01 13:07:02 UTC

  openssh (1:8.9p1-3ubuntu0.10) jammy-security; urgency=medium

  * SECURITY UPDATE: remote code execution via signal handler race
    condition (LP: #2070497)
    - debian/patches/CVE-2024-6387.patch: don't log in sshsigdie() in log.c.
    - CVE-2024-6387

 -- Marc Deslauriers <email address hidden> Wed, 26 Jun 2024 09:11:55 -0400


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