Moderate CentOS openssh Security Update

Metadata

medium
4.6
openssh-6.6.1p1-23.el7_2.src.rpm, openssh-6.6.1p1-23.el7_2.x86_64.rpm, openssh-askpass-6.6.1p1-23.el7_2.x86_64.rpm, openssh-clients-6.6.1p1-23.el7_2.x86_64.rpm, openssh-keycat-6.6.1p1-23.el7_2.x86_64.rpm, openssh-ldap-6.6.1p1-23.el7_2.x86_64.rpm, openssh-server-6.6.1p1-23.el7_2.x86_64.rpm, openssh-server-sysvinit-6.6.1p1-23.el7_2.x86_64.rpm, pam_ssh_agent_auth-0.9.3-9.23.el7_2.i686.rpm, pam_ssh_agent_auth-0.9.3-9.23.el7_2.x86_64.rpm
CVE-2016-0777, CVE-2016-0778
rhn.redhat.com, lists.centos.org
2016-01-14
2017-07-27 19:10
ALAS-2016-638
CVE-2016-0778 openssh
CVE-2016-0777 openssh
CVE-2016-0778
CVE-2016-0777
2017-04-01 19:09
2017-01-05 20:13

Description


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.

An information leak flaw was found in the way the OpenSSH client roaming
feature was implemented. A malicious server could potentially use this flaw
to leak portions of memory (possibly including private SSH keys) of a
successfully authenticated OpenSSH client. (CVE-2016-0777)

A buffer overflow flaw was found in the way the OpenSSH client roaming
feature was implemented. A malicious server could potentially use this flaw
to execute arbitrary code on a successfully authenticated OpenSSH client if
that client used certain non-default configuration options. (CVE-2016-0778)

Red Hat would like to thank Qualys for reporting these issues.

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 https://www.redhat.com/footer/terms-of-use.html

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.

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Affected package information

Release Package Patched in
7 openssh openssh-6.6.1p1-23.el7_2.src.rpm
openssh openssh-6.6.1p1-23.el7_2.x86_64.rpm
openssh-askpass openssh-askpass-6.6.1p1-23.el7_2.x86_64.rpm
openssh-clients openssh-clients-6.6.1p1-23.el7_2.x86_64.rpm
openssh-keycat openssh-keycat-6.6.1p1-23.el7_2.x86_64.rpm
openssh-ldap openssh-ldap-6.6.1p1-23.el7_2.x86_64.rpm
openssh-server openssh-server-6.6.1p1-23.el7_2.x86_64.rpm
openssh-server-sysvinit openssh-server-sysvinit-6.6.1p1-23.el7_2.x86_64.rpm
pam_ssh_agent_auth pam_ssh_agent_auth-0.9.3-9.23.el7_2.i686.rpm
pam_ssh_agent_auth pam_ssh_agent_auth-0.9.3-9.23.el7_2.x86_64.rpm