==================================================================== Red Hat Security Advisory Synopsis: Moderate: openssh security update Advisory ID: RHSA-2009:1470-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-1470.html Issue date: 2009-09-30 CVE Names: CVE-2009-2904 ==================================================================== 1. Summary: 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. 2. 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 3. 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. 4. 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 5. Bugs fixed (https://bugzilla.redhat.com/): 522141 - CVE-2009-2904 openssh: possible privilege escalation when using ChrootDirectory setting 6. 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 7. References: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2904 https://www.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is
. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2009 Red Hat, Inc.