Moderate CentOS openssh Security Update


openssh-6.6.1p1-25.el7_2.src.rpm, openssh-6.6.1p1-25.el7_2.x86_64.rpm, openssh-askpass-6.6.1p1-25.el7_2.x86_64.rpm, openssh-clients-6.6.1p1-25.el7_2.x86_64.rpm, openssh-keycat-6.6.1p1-25.el7_2.x86_64.rpm, openssh-ldap-6.6.1p1-25.el7_2.x86_64.rpm, openssh-server-6.6.1p1-25.el7_2.x86_64.rpm, openssh-server-sysvinit-6.6.1p1-25.el7_2.x86_64.rpm, pam_ssh_agent_auth-0.9.3-9.25.el7_2.i686.rpm, pam_ssh_agent_auth-0.9.3-9.25.el7_2.x86_64.rpm,
2018-01-18 11:11
2017-07-27 19:10
2017-04-01 19:09
2017-01-05 20:14


Updated openssh packages that fix two security issues are now available
for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Moderate security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.

OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation.
These packages include the core files necessary for both the OpenSSH client
and server.

It was discovered that the OpenSSH server did not sanitize data received
in requests to enable X11 forwarding. An authenticated client with
restricted SSH access could possibly use this flaw to bypass intended
restrictions. (CVE-2016-3115)

An access flaw was discovered in OpenSSH; the OpenSSH client did not
correctly handle failures to generate authentication cookies for untrusted
X11 forwarding. A malicious or compromised remote X application could
possibly use this flaw to establish a trusted connection to the local X
server, even if only untrusted X11 forwarding was requested.

All openssh users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. After installing this
update, the OpenSSH server daemon (sshd) will be restarted automatically.
Please see

Am I vulnerable?

The constraints below list the versions that this vulnerability is patched in, and versions that are unaffected. If a patch is ready but unrealeased, then it is pending.

Or, you can just let us figure it out for you! Appcanary continously monitor your installed packages, and tell you if any of them are vulnerable.

Sign up for monitoring

Affected package information

Release Package Patched in
7 openssh openssh-6.6.1p1-25.el7_2.src.rpm
openssh openssh-6.6.1p1-25.el7_2.x86_64.rpm
openssh-askpass openssh-askpass-6.6.1p1-25.el7_2.x86_64.rpm
openssh-clients openssh-clients-6.6.1p1-25.el7_2.x86_64.rpm
openssh-keycat openssh-keycat-6.6.1p1-25.el7_2.x86_64.rpm
openssh-ldap openssh-ldap-6.6.1p1-25.el7_2.x86_64.rpm
openssh-server openssh-server-6.6.1p1-25.el7_2.x86_64.rpm
openssh-server-sysvinit openssh-server-sysvinit-6.6.1p1-25.el7_2.x86_64.rpm
pam_ssh_agent_auth pam_ssh_agent_auth-0.9.3-9.25.el7_2.i686.rpm
pam_ssh_agent_auth pam_ssh_agent_auth-0.9.3-9.25.el7_2.x86_64.rpm