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Red Hat 6: RHSA-2010:0945-01 Moderate: Quagga DoS and Code Execution

red hat
Calendar Grey December 6, 2010
Dist Redhat Esm H88
Maintain the integrity of your Red Hat Enterprise Linux 6 by applying the newest quagga patch to address moderate vulnerabilities and potential exploitations.
Updated quagga packages that fix two security issues are now available for Red Hat Enterprise Linux 6

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

Summary

Quagga is a TCP/IP based routing software suite. The Quagga bgpd daemon implements the BGP (Border Gateway Protocol) routing protocol.
A stack-based buffer overflow flaw was found in the way the Quagga bgpd daemon processed certain BGP Route Refresh (RR) messages. A configured BGP peer could send a specially-crafted BGP message, causing bgpd on a target system to crash or, possibly, execute arbitrary code with the privileges of the user running bgpd. (CVE-2010-2948)
Note: On Red Hat Enterprise Linux 6 it is not possible to exploit CVE-2010-2948 to run arbitrary code as the overflow is blocked by FORTIFY_SOURCE.
A NULL pointer dereference flaw was found in the way the Quagga bgpd daemon parsed the paths of autonomous systems (AS). A configured BGP peer could crash bgpd on a target system via a specially-crafted BGP message. (CVE-2010-2949)
Users of quagga should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the bgpd daemon must be restarted for the update to take effect.

Topics%20covered

Topics Covered

security advisory security update Red Hat buffer overflow DoS routing software Quagga

References

https://access.redhat.com/security/cve/CVE-2010-2948 https://access.redhat.com/security/cve/CVE-2010-2949 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Server (v. 6):
Source:
i386: quagga-0.99.15-5.el6_0.1.i686.rpm quagga-debuginfo-0.99.15-5.el6_0.1.i686.rpm
ppc64: quagga-0.99.15-5.el6_0.1.ppc64.rpm quagga-debuginfo-0.99.15-5.el6_0.1.ppc64.rpm
s390x: quagga-0.99.15-5.el6_0.1.s390x.rpm quagga-debuginfo-0.99.15-5.el6_0.1.s390x.rpm
x86_64: quagga-0.99.15-5.el6_0.1.x86_64.rpm quagga-debuginfo-0.99.15-5.el6_0.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
i386: quagga-contrib-0.99.15-5.el6_0.1.i686.rpm quagga-debuginfo-0.99.15-5.el6_0.1.i686.rpm quagga-devel-0.99.15-5.el6_0.1.i686.rpm
ppc64: quagga-contrib-0.99.15-5.el6_0.1.ppc64.rpm quagga-debuginfo-0.99.15-5.el6_0.1.ppc.rpm quagga-debuginfo-0.99.15-5.el6_0.1.ppc64.rpm quagga-devel-0.99.15-5.el6_0.1.ppc.rpm quagga-devel-0.99.15-5.el6_0.1.ppc64.rpm
s390x: quagga-contrib-0.99.15-5.el6_0.1.s390x.rpm quagga-debuginfo-0.99.15-5.el6_0.1.s390.rpm quagga-debuginfo-0.99.15-5.el6_0.1.s390x.rpm quagga-devel-0.99.15-5.el6_0.1.s390.rpm quagga-devel-0.99.15-5.el6_0.1.s390x.rpm
x86_64: quagga-contrib-0.99.15-5.el6_0.1.x86_64.rpm quagga-debuginfo-0.99.15-5.el6_0.1.i686.rpm quagga-debuginfo-0.99.15-5.el6_0.1.x86_64.rpm quagga-devel-0.99.15-5.el6_0.1.i686.rpm quagga-devel-0.99.15-5.el6_0.1.x86_64.rpm


Read the Full Advisory


Advisory ID: RHSA-2010:0945-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0945.html
Issue date: 2010-12-06

Topic

Updated quagga packages that fix two security issues are now available forRed Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory security update Red Hat buffer overflow DoS routing software Quagga

Relevant Releases Architectures

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

626783 - CVE-2010-2948 Quagga (bgpd): Stack buffer overflow by processing certain Route-Refresh messages

626795 - CVE-2010-2949 Quagga (bgpd): DoS (crash) while processing certain BGP update AS path messages

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