high
7.5
CWE
119
Advisory Published
CVE Published
Updated

CVE-2011-3327: Buffer Overflow

First published: Wed Sep 14 2011(Updated: )

A heap-based buffer overflow flaw was found in the way bgpd daemon of the Quagga routing suite processed BGP UPDATE messages containing unknown AS_PATH in Extended Communities Path Attribute. A configured BGP peer could use this flaw to cause the master BGP daemon (bgpd) to crash, or, potentially execute arbitrary code with the privileges of the user running bgpd.

Credit: cret@cert.org

Affected SoftwareAffected VersionHow to fix
redhat/quagga<0.99.19
0.99.19
Quagga Routing Software Suite=0.99.11
Quagga Routing Software Suite=0.99.2
Quagga Routing Software Suite=0.97.5
Quagga Routing Software Suite=0.95
Quagga Routing Software Suite=0.98.3
Quagga Routing Software Suite=0.96.3
Quagga Routing Software Suite=0.99.4
Quagga Routing Software Suite=0.99.7
Quagga Routing Software Suite=0.99.14
Quagga Routing Software Suite=0.99.5
Quagga Routing Software Suite=0.96.5
Quagga Routing Software Suite=0.98.0
Quagga Routing Software Suite=0.99.16
Quagga Routing Software Suite=0.96.1
Quagga Routing Software Suite=0.98.1
Quagga Routing Software Suite=0.96.4
Quagga Routing Software Suite=0.98.5
Quagga Routing Software Suite=0.97.3
Quagga Routing Software Suite=0.99.17
Quagga Routing Software Suite=0.99.3
Quagga Routing Software Suite=0.99.13
Quagga Routing Software Suite=0.99.6
Quagga Routing Software Suite=0.98.6
Quagga Routing Software Suite=0.97.4
Quagga Routing Software Suite=0.98.4
Quagga Routing Software Suite=0.99.12
Quagga Routing Software Suite=0.98.2
Quagga Routing Software Suite=0.97.1
Quagga Routing Software Suite=0.97.0
Quagga Routing Software Suite=0.96.2
Quagga Routing Software Suite=0.99.9
Quagga Routing Software Suite=0.99.1
Quagga Routing Software Suite<=0.99.18
Quagga Routing Software Suite=0.97.2
Quagga Routing Software Suite=0.99.15
Quagga Routing Software Suite=0.99.10
Quagga Routing Software Suite=0.99.8
Quagga Routing Software Suite=0.96

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-3327?

    CVE-2011-3327 has a low severity rating due to the nature of its exploit, which primarily causes denial of service.

  • How do I fix CVE-2011-3327?

    To fix CVE-2011-3327, upgrade Quagga to version 0.99.19 or later.

  • What versions of Quagga are affected by CVE-2011-3327?

    CVE-2011-3327 affects all Quagga versions prior to 0.99.19, including 0.95, 0.96.x, 0.97.x, 0.98.x, and 0.99.x up to 0.99.18.

  • Can CVE-2011-3327 lead to remote code execution?

    No, CVE-2011-3327 is a heap-based buffer overflow vulnerability that primarily leads to a crash, rather than remote code execution.

  • Is there a workaround for CVE-2011-3327 if I cannot upgrade?

    There are no effective workarounds for CVE-2011-3327, hence updating to a patched version is strongly recommended.

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