#VU44629 Resource management error in Quagga - CVE-2011-3326

Vulnerability identifier: #VU44629

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-3326

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Quagga
Server applications / Other server solutions

Vendor: quagga.net

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The ospf_flood function in ospf_flood.c in ospfd in Quagga before 0.99.19 allows remote attackers to cause a denial of service (daemon crash) via an invalid Link State Advertisement (LSA) type in an IPv4 Link State Update message.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Quagga: 0.95 - 0.99.17

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External links
https://code.quagga.net/?p=quagga.git;a=commit;h=6b161fc12a15aba8824c84d1eb38e529aaf70769
https://lists.opensuse.org/opensuse-security-announce/2011-09/msg00027.html
https://lists.opensuse.org/opensuse-security-announce/2011-10/msg00007.html
https://lists.opensuse.org/opensuse-security-announce/2011-10/msg00010.html
https://lists.opensuse.org/opensuse-security-announce/2011-12/msg00009.html
https://rhn.redhat.com/errata/RHSA-2012-1258.html
https://rhn.redhat.com/errata/RHSA-2012-1259.html
https://secunia.com/advisories/46139
https://secunia.com/advisories/46274
https://secunia.com/advisories/48106
https://security.gentoo.org/glsa/glsa-201202-02.xml
https://www.debian.org/security/2011/dsa-2316
https://www.kb.cert.org/vuls/id/668534
https://www.quagga.net/download/quagga-0.99.19.changelog.txt
https://www.cert.fi/en/reports/2011/vulnerability539178.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.