RHSA-2016:0465Medium

Red Hat Security Advisory: openssh security update

Published
March 21, 2016
Last Modified
November 5, 2026

🔗 CVE IDs covered (2)

CVE-2016-1908 →CVE-2016-3115 →

📋 Description

CVE-2016-1908 — openssh: possible fallback from untrusted to trusted X11 forwarding CVE-2016-3115 — openssh: missing sanitisation of input for X11 forwarding

🎯 Affected products94

  • Red Hat Enterprise Linux Client (v. 7)
  • Red Hat Enterprise Linux Client Optional (v. 7)
  • Red Hat Enterprise Linux ComputeNode (v. 7)
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7)
  • Red Hat Enterprise Linux Server (v. 7)
  • Red Hat Enterprise Linux Server Optional (v. 7)
  • Red Hat Enterprise Linux Workstation (v. 7)
  • Red Hat Enterprise Linux Workstation Optional (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.s390x as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.src as a component of Red Hat Enterprise Linux Client (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.src as a component of Red Hat Enterprise Linux ComputeNode (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.src as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.src as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.x86_64 as a component of Red Hat Enterprise Linux ComputeNode (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-0:6.6.1p1-25.el7_2.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • openssh-askpass-0:6.6.1p1-25.el7_2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-askpass-0:6.6.1p1-25.el7_2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-askpass-0:6.6.1p1-25.el7_2.s390x as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-askpass-0:6.6.1p1-25.el7_2.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • openssh-askpass-0:6.6.1p1-25.el7_2.x86_64 as a component of Red Hat Enterprise Linux ComputeNode Optional (v. 7)
  • openssh-askpass-0:6.6.1p1-25.el7_2.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-askpass-0:6.6.1p1-25.el7_2.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • openssh-clients-0:6.6.1p1-25.el7_2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-clients-0:6.6.1p1-25.el7_2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-clients-0:6.6.1p1-25.el7_2.s390x as a component of Red Hat Enterprise Linux Server (v. 7)
  • openssh-clients-0:6.6.1p1-25.el7_2.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • +64 more not shown

✅ Remediation

Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Workaround: Set X11Forwarding=no in sshd_config. For authorized_keys that specify a "command" restriction, this issue can be mitigated by also setting the "no-X11-forwarding" restriction. In OpenSSH 7.2 and later, the "restrict" restriction can be used instead, which includes the "no-X11-forwarding" restriction.

🔗 References (5)