Vulnerability identifier: #VU44628

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2011-3325

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.

ospf_packet.c in ospfd in Quagga before 0.99.19 allows remote attackers to cause a denial of service (daemon crash) via (1) a 0x0a type field in an IPv4 packet header or (2) a truncated IPv4 Hello packet.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Quagga: 0.95 - 0.99.17

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External links
http://code.quagga.net/?p=quagga.git;a=commit;h=61ab0301606053192f45c188bc48afc837518770
http://code.quagga.net/?p=quagga.git;a=commit;h=717750433839762d23a5f8d88fe0b4d57c8d490a
http://lists.opensuse.org/opensuse-security-announce/2011-09/msg00027.html
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2011-12/msg00009.html
http://rhn.redhat.com/errata/RHSA-2012-1258.html
http://rhn.redhat.com/errata/RHSA-2012-1259.html
http://secunia.com/advisories/46139
http://secunia.com/advisories/46274
http://secunia.com/advisories/48106
http://security.gentoo.org/glsa/glsa-201202-02.xml
http://www.debian.org/security/2011/dsa-2316
http://www.kb.cert.org/vuls/id/668534
http://www.quagga.net/download/quagga-0.99.19.changelog.txt
http://bugzilla.redhat.com/show_bug.cgi?id=738396
http://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.