Synopsis:          Moderate: quagga security update
Issue Date:        2012-09-12
CVE Numbers:       CVE-2010-1674
                    CVE-2011-3323
                    CVE-2011-3324
                    CVE-2011-3325
                    CVE-2011-3326
                    CVE-2011-3327
                    CVE-2012-0249
                    CVE-2012-0250


A heap-based buffer overflow flaw was found in the way the bgpd daemon
processed malformed Extended Communities path attributes. An attacker 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. The UPDATE message would have to arrive from an explicitly
configured BGP peer, but could have originated elsewhere in the BGP
network. (CVE-2011-3327)

A NULL pointer dereference flaw was found in the way the bgpd daemon
processed malformed route Extended Communities attributes. A configured
BGP peer could crash bgpd on a target system via a specially-crafted BGP
message. (CVE-2010-1674)

A stack-based buffer overflow flaw was found in the way the ospf6d daemon
processed malformed Link State Update packets. An OSPF router could use
this flaw to crash ospf6d on an adjacent router. (CVE-2011-3323)

A flaw was found in the way the ospf6d daemon processed malformed link
state advertisements. An OSPF neighbor could use this flaw to crash
ospf6d on a target system. (CVE-2011-3324)

A flaw was found in the way the ospfd daemon processed malformed Hello
packets. An OSPF neighbor could use this flaw to crash ospfd on a
target system. (CVE-2011-3325)

A flaw was found in the way the ospfd daemon processed malformed link state
advertisements. An OSPF router in the autonomous system could use this flaw
to crash ospfd on a target system. (CVE-2011-3326)

An assertion failure was found in the way the ospfd daemon processed
certain Link State Update packets. An OSPF router could use this flaw to
cause ospfd on an adjacent router to abort. (CVE-2012-0249)

A buffer overflow flaw was found in the way the ospfd daemon processed
certain Link State Update packets. An OSPF router could use this flaw to
crash ospfd on an adjacent router. (CVE-2012-0250)

We would like to thank CERT-FI for reporting CVE-2011-3327,
CVE-2011-3323, CVE-2011-3324, CVE-2011-3325, and CVE-2011-3326; and the
CERT/CC for reporting CVE-2012-0249 and CVE-2012-0250. CERT-FI acknowledges
Riku Hietamki, Tuomo Untinen and Jukka Taimisto of the Codenomicon CROSS
project as the original reporters of CVE-2011-3327, CVE-2011-3323,
CVE-2011-3324, CVE-2011-3325, and CVE-2011-3326. The CERT/CC acknowledges
Martin Winter at OpenSourceRouting.org as the original reporter of
CVE-2012-0249 and CVE-2012-0250.

After installing the updated packages, the bgpd, ospfd, and ospf6d daemons
will be restarted automatically.

SL5
   x86_64
     quagga-contrib-0.98.6-7.el5_8.1.x86_64.rpm
     quagga-0.98.6-7.el5_8.1.x86_64.rpm
     quagga-devel-0.98.6-7.el5_8.1.i386.rpm
     quagga-devel-0.98.6-7.el5_8.1.x86_64.rpm
   i386
     quagga-contrib-0.98.6-7.el5_8.1.i386.rpm
     quagga-0.98.6-7.el5_8.1.i386.rpm
     quagga-devel-0.98.6-7.el5_8.1.i386.rpm

- Scientific Linux Development Team