Red Hat: 2013:1591-02: openssh: Low Advisory
Summary
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.
Summary
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
References
https://www.redhat.com/security/data/cve/CVE-2010-5107.html 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
Package List
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386:
openssh-5.3p1-94.el6.i686.rpm
openssh-askpass-5.3p1-94.el6.i686.rpm
openssh-clients-5.3p1-94.el6.i686.rpm
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-server-5.3p1-94.el6.i686.rpm
x86_64:
openssh-5.3p1-94.el6.x86_64.rpm
openssh-askpass-5.3p1-94.el6.x86_64.rpm
openssh-clients-5.3p1-94.el6.x86_64.rpm
openssh-debuginfo-5.3p1-94.el6.x86_64.rpm
openssh-server-5.3p1-94.el6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386:
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-ldap-5.3p1-94.el6.i686.rpm
pam_ssh_agent_auth-0.9.3-94.el6.i686.rpm
x86_64:
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-debuginfo-5.3p1-94.el6.x86_64.rpm
openssh-ldap-5.3p1-94.el6.x86_64.rpm
pam_ssh_agent_auth-0.9.3-94.el6.i686.rpm
pam_ssh_agent_auth-0.9.3-94.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64:
openssh-5.3p1-94.el6.x86_64.rpm
openssh-clients-5.3p1-94.el6.x86_64.rpm
openssh-debuginfo-5.3p1-94.el6.x86_64.rpm
openssh-server-5.3p1-94.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64:
openssh-askpass-5.3p1-94.el6.x86_64.rpm
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-debuginfo-5.3p1-94.el6.x86_64.rpm
openssh-ldap-5.3p1-94.el6.x86_64.rpm
pam_ssh_agent_auth-0.9.3-94.el6.i686.rpm
pam_ssh_agent_auth-0.9.3-94.el6.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386:
openssh-5.3p1-94.el6.i686.rpm
openssh-askpass-5.3p1-94.el6.i686.rpm
openssh-clients-5.3p1-94.el6.i686.rpm
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-server-5.3p1-94.el6.i686.rpm
ppc64:
openssh-5.3p1-94.el6.ppc64.rpm
openssh-askpass-5.3p1-94.el6.ppc64.rpm
openssh-clients-5.3p1-94.el6.ppc64.rpm
openssh-debuginfo-5.3p1-94.el6.ppc64.rpm
openssh-server-5.3p1-94.el6.ppc64.rpm
s390x:
openssh-5.3p1-94.el6.s390x.rpm
openssh-askpass-5.3p1-94.el6.s390x.rpm
openssh-clients-5.3p1-94.el6.s390x.rpm
openssh-debuginfo-5.3p1-94.el6.s390x.rpm
openssh-server-5.3p1-94.el6.s390x.rpm
x86_64:
openssh-5.3p1-94.el6.x86_64.rpm
openssh-askpass-5.3p1-94.el6.x86_64.rpm
openssh-clients-5.3p1-94.el6.x86_64.rpm
openssh-debuginfo-5.3p1-94.el6.x86_64.rpm
openssh-server-5.3p1-94.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
i386:
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-ldap-5.3p1-94.el6.i686.rpm
pam_ssh_agent_auth-0.9.3-94.el6.i686.rpm
ppc64:
openssh-debuginfo-5.3p1-94.el6.ppc.rpm
openssh-debuginfo-5.3p1-94.el6.ppc64.rpm
openssh-ldap-5.3p1-94.el6.ppc64.rpm
pam_ssh_agent_auth-0.9.3-94.el6.ppc.rpm
pam_ssh_agent_auth-0.9.3-94.el6.ppc64.rpm
s390x:
openssh-debuginfo-5.3p1-94.el6.s390.rpm
openssh-debuginfo-5.3p1-94.el6.s390x.rpm
openssh-ldap-5.3p1-94.el6.s390x.rpm
pam_ssh_agent_auth-0.9.3-94.el6.s390.rpm
pam_ssh_agent_auth-0.9.3-94.el6.s390x.rpm
x86_64:
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-debuginfo-5.3p1-94.el6.x86_64.rpm
openssh-ldap-5.3p1-94.el6.x86_64.rpm
pam_ssh_agent_auth-0.9.3-94.el6.i686.rpm
pam_ssh_agent_auth-0.9.3-94.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386:
openssh-5.3p1-94.el6.i686.rpm
openssh-askpass-5.3p1-94.el6.i686.rpm
openssh-clients-5.3p1-94.el6.i686.rpm
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-server-5.3p1-94.el6.i686.rpm
x86_64:
openssh-5.3p1-94.el6.x86_64.rpm
openssh-askpass-5.3p1-94.el6.x86_64.rpm
openssh-clients-5.3p1-94.el6.x86_64.rpm
openssh-debuginfo-5.3p1-94.el6.x86_64.rpm
openssh-server-5.3p1-94.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
i386:
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-ldap-5.3p1-94.el6.i686.rpm
pam_ssh_agent_auth-0.9.3-94.el6.i686.rpm
x86_64:
openssh-debuginfo-5.3p1-94.el6.i686.rpm
openssh-debuginfo-5.3p1-94.el6.x86_64.rpm
openssh-ldap-5.3p1-94.el6.x86_64.rpm
pam_ssh_agent_auth-0.9.3-94.el6.i686.rpm
pam_ssh_agent_auth-0.9.3-94.el6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
Topic
Updated openssh packages that fix one security issue, several bugs, and addvarious enhancements are now available for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having lowsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
Bugs Fixed
908707 - CVE-2010-5107 openssh: Prevent connection slot exhaustion attacks
974096 - Kerberos ticket forwarding does not work if /tmp is polyinstantiated