Red Hat: 2013:1591-02: openssh: Low Advisory
Posted by Benjamin D. Thomas   
RedHat Linux 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 [More...]
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                   Red Hat Security Advisory

Synopsis:          Low: openssh security, bug fix, and enhancement update
Advisory ID:       RHSA-2013:1591-02
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2013-1591.html
Issue date:        2013-11-21
CVE Names:         CVE-2010-5107 
=====================================================================

1. Summary:

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.

2. 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

3. 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.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

908707 - CVE-2010-5107 openssh: Prevent connection slot exhaustion attacks
974096 - Kerberos ticket forwarding does not work if /tmp is polyinstantiated

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openssh-5.3p1-94.el6.src.rpm

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:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openssh-5.3p1-94.el6.src.rpm

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:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/openssh-5.3p1-94.el6.src.rpm

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:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/openssh-5.3p1-94.el6.src.rpm

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:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openssh-5.3p1-94.el6.src.rpm

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:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openssh-5.3p1-94.el6.src.rpm

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:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openssh-5.3p1-94.el6.src.rpm

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:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openssh-5.3p1-94.el6.src.rpm

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

7. 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

8. Contact:

The Red Hat security contact is .  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2013 Red Hat, Inc.