RedHat: Moderate: openssh security update
Summary
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.
Summary
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
References
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2904 http://www.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386:
openssh-4.3p2-36.el5_4.2.i386.rpm
openssh-askpass-4.3p2-36.el5_4.2.i386.rpm
openssh-clients-4.3p2-36.el5_4.2.i386.rpm
openssh-debuginfo-4.3p2-36.el5_4.2.i386.rpm
openssh-server-4.3p2-36.el5_4.2.i386.rpm
x86_64:
openssh-4.3p2-36.el5_4.2.x86_64.rpm
openssh-askpass-4.3p2-36.el5_4.2.x86_64.rpm
openssh-clients-4.3p2-36.el5_4.2.x86_64.rpm
openssh-debuginfo-4.3p2-36.el5_4.2.x86_64.rpm
openssh-server-4.3p2-36.el5_4.2.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
openssh-4.3p2-36.el5_4.2.i386.rpm
openssh-askpass-4.3p2-36.el5_4.2.i386.rpm
openssh-clients-4.3p2-36.el5_4.2.i386.rpm
openssh-debuginfo-4.3p2-36.el5_4.2.i386.rpm
openssh-server-4.3p2-36.el5_4.2.i386.rpm
ia64:
openssh-4.3p2-36.el5_4.2.ia64.rpm
openssh-askpass-4.3p2-36.el5_4.2.ia64.rpm
openssh-clients-4.3p2-36.el5_4.2.ia64.rpm
openssh-debuginfo-4.3p2-36.el5_4.2.ia64.rpm
openssh-server-4.3p2-36.el5_4.2.ia64.rpm
ppc:
openssh-4.3p2-36.el5_4.2.ppc.rpm
openssh-askpass-4.3p2-36.el5_4.2.ppc.rpm
openssh-clients-4.3p2-36.el5_4.2.ppc.rpm
openssh-debuginfo-4.3p2-36.el5_4.2.ppc.rpm
openssh-server-4.3p2-36.el5_4.2.ppc.rpm
s390x:
openssh-4.3p2-36.el5_4.2.s390x.rpm
openssh-askpass-4.3p2-36.el5_4.2.s390x.rpm
openssh-clients-4.3p2-36.el5_4.2.s390x.rpm
openssh-debuginfo-4.3p2-36.el5_4.2.s390x.rpm
openssh-server-4.3p2-36.el5_4.2.s390x.rpm
x86_64:
openssh-4.3p2-36.el5_4.2.x86_64.rpm
openssh-askpass-4.3p2-36.el5_4.2.x86_64.rpm
openssh-clients-4.3p2-36.el5_4.2.x86_64.rpm
openssh-debuginfo-4.3p2-36.el5_4.2.x86_64.rpm
openssh-server-4.3p2-36.el5_4.2.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://www.redhat.com/security/team/key/#package
Topic
Updated openssh packages that fix a security issue are now available forRed Hat Enterprise Linux 5.This update has been rated as having moderate security impact by the RedHat Security Response Team.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Bugs Fixed
522141 - CVE-2009-2904 openssh: possible privilege escalation when using ChrootDirectory setting