Issued:

2013-11-21

Updated:

2013-11-21

RHSA-2013:1591 - Low: openssh security, bug fix, and enhancement update

Synopsis

Low: openssh security, bug fix, and enhancement update

Type/Severity

Security Advisory Low

Topic

Updated openssh packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Description

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

The default OpenSSH configuration made it easy for remote attackers to exhaust unauthorized connection slots and prevent other users from being able to log in to a system. This flaw has been addressed by enabling random early connection drops by setting MaxStartups to 10:30:100 by default. For more information, refer to the sshd_config(5) man page. (CVE-2010-5107)

These updated openssh packages include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.5 Technical Notes, linked to in the References, for information on the most significant of these changes.

All openssh users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258

Affected Products

Updated Packages

• openssh-server-5.3p1-94.el6.x86_64.rpm
• pam_ssh_agent_auth-0.9.3-94.el6.ppc.rpm
• openssh-5.3p1-94.el6.i686.rpm
• openssh-server-5.3p1-94.el6.ppc64.rpm
• openssh-askpass-5.3p1-94.el6.s390x.rpm
• openssh-clients-5.3p1-94.el6.i686.rpm
• openssh-clients-5.3p1-94.el6.ppc64.rpm
• openssh-debuginfo-5.3p1-94.el6.x86_64.rpm
• openssh-askpass-5.3p1-94.el6.i686.rpm
• openssh-debuginfo-5.3p1-94.el6.s390x.rpm
• pam_ssh_agent_auth-0.9.3-94.el6.s390x.rpm
• openssh-5.3p1-94.el6.ppc64.rpm
• openssh-server-5.3p1-94.el6.s390x.rpm
• openssh-5.3p1-94.el6.s390x.rpm
• openssh-server-5.3p1-94.el6.i686.rpm
• openssh-5.3p1-94.el6.x86_64.rpm
• openssh-5.3p1-94.el6.src.rpm
• openssh-ldap-5.3p1-94.el6.x86_64.rpm
• openssh-ldap-5.3p1-94.el6.i686.rpm
• pam_ssh_agent_auth-0.9.3-94.el6.s390.rpm
• openssh-clients-5.3p1-94.el6.s390x.rpm
• pam_ssh_agent_auth-0.9.3-94.el6.x86_64.rpm
• openssh-debuginfo-5.3p1-94.el6.i686.rpm
• openssh-debuginfo-5.3p1-94.el6.ppc.rpm
• openssh-debuginfo-5.3p1-94.el6.ppc64.rpm
• pam_ssh_agent_auth-0.9.3-94.el6.i686.rpm
• openssh-clients-5.3p1-94.el6.x86_64.rpm
• openssh-ldap-5.3p1-94.el6.s390x.rpm
• openssh-ldap-5.3p1-94.el6.ppc64.rpm
• openssh-debuginfo-5.3p1-94.el6.s390.rpm
• openssh-askpass-5.3p1-94.el6.ppc64.rpm
• pam_ssh_agent_auth-0.9.3-94.el6.ppc64.rpm
• openssh-askpass-5.3p1-94.el6.x86_64.rpm

Fixes

• This content is not included.BZ - 908707
• This content is not included.BZ - 974096

CVEs

• CVE-2010-5107

References

• https://access.redhat.com/security/updates/classification/#low
• https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.5_Technical_Notes/openssh.html#RHSA-2013-1591

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.