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Quagga Routing Suite: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200605-15 / quagga
Release Date May 21, 2006
Latest Revision May 21, 2006: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-misc/quagga < 0.98.6-r1 >= 0.98.6-r1 All supported architectures

Related bugreports: #132353


Quagga's RIP daemon allows the injection of routes and the disclosure of routing information. The BGP daemon is vulnerable to a Denial of Service.

2.  Impact Information


The Quagga Routing Suite implements three major routing protocols: RIP (v1/v2/v3), OSPF (v2/v3) and BGP4.


Konstantin V. Gavrilenko discovered two flaws in the Routing Information Protocol (RIP) daemon that allow the processing of RIP v1 packets (carrying no authentication) even when the daemon is configured to use MD5 authentication or, in another case, even if RIP v1 is completely disabled. Additionally, Fredrik Widell reported that the Border Gateway Protocol (BGP) daemon contains a flaw that makes it lock up and use all available CPU when a specific command is issued from the telnet interface.


By sending RIP v1 response packets, an unauthenticated attacker can alter the routing table of a router running Quagga's RIP daemon and disclose routing information. Additionally, it is possible to lock up the BGP daemon from the telnet interface.

3.  Resolution Information


There is no known workaround at this time.


All Quagga users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/quagga-0.98.6-r1"

4.  References


Page updated May 21, 2006

Summary: This is a Gentoo Linux Security Advisory

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