Issued:
2009-09-30
Updated:
2009-09-30

RHSA-2009:1470 - Moderate: openssh security update

Synopsis

Moderate: openssh security update

Type/Severity

Security Advisory Moderate

Topic

Updated openssh packages that fix a security issue are now available for Red Hat Enterprise Linux 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Description

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

A Red Hat specific patch used in the openssh packages as shipped in Red Hat Enterprise Linux 5.4 (RHSA-2009:1287) loosened certain ownership requirements for directories used as arguments for the ChrootDirectory configuration options. A malicious user that also has or previously had non-chroot shell access to a system could possibly use this flaw to escalate their privileges and run commands as any system user. (CVE-2009-2904)

All OpenSSH users are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically.

Solution

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

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Update Support5.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support5.4ia64
Red Hat Enterprise Linux for x86_64 - Extended Update Support5.4i386
Red Hat Enterprise Linux for Power, big endian5ppc
Red Hat Enterprise Linux for Power, big endian - Extended Update Support5.4ppc
Red Hat Enterprise Linux for IBM z Systems5s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support5.4s390x
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Workstation5i386
Red Hat Enterprise Linux Server5x86_64
Red Hat Enterprise Linux Server5ia64
Red Hat Enterprise Linux Server5i386
Red Hat Enterprise Linux Server from RHUI5x86_64
Red Hat Enterprise Linux Server from RHUI5i386
Red Hat Enterprise Linux Desktop5x86_64
Red Hat Enterprise Linux Desktop5i386

Updated Packages

  • openssh-askpass-4.3p2-36.el5_4.2.s390x.rpm
  • openssh-askpass-4.3p2-36.el5_4.2.ppc.rpm
  • openssh-4.3p2-36.el5_4.2.x86_64.rpm
  • openssh-clients-4.3p2-36.el5_4.2.s390x.rpm
  • openssh-askpass-4.3p2-36.el5_4.2.x86_64.rpm
  • openssh-clients-4.3p2-36.el5_4.2.i386.rpm
  • openssh-clients-4.3p2-36.el5_4.2.ia64.rpm
  • openssh-4.3p2-36.el5_4.2.src.rpm
  • openssh-server-4.3p2-36.el5_4.2.i386.rpm
  • openssh-4.3p2-36.el5_4.2.ppc.rpm
  • openssh-server-4.3p2-36.el5_4.2.s390x.rpm
  • openssh-clients-4.3p2-36.el5_4.2.x86_64.rpm
  • openssh-server-4.3p2-36.el5_4.2.ia64.rpm
  • openssh-4.3p2-36.el5_4.2.ia64.rpm
  • openssh-server-4.3p2-36.el5_4.2.x86_64.rpm
  • openssh-4.3p2-36.el5_4.2.i386.rpm
  • openssh-askpass-4.3p2-36.el5_4.2.ia64.rpm
  • openssh-4.3p2-36.el5_4.2.s390x.rpm
  • openssh-askpass-4.3p2-36.el5_4.2.i386.rpm
  • openssh-clients-4.3p2-36.el5_4.2.ppc.rpm
  • openssh-server-4.3p2-36.el5_4.2.ppc.rpm

Fixes

CVEs

References

Additional information