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Moderately critical

Quagga Multiple Denial of Service Vulnerabilities

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Release Date:  2011-09-27    Last Update:  2011-09-30    Views:  1,684

Secunia Advisory SA46139

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Multiple vulnerabilities have been reported in Quagga, which can be exploited by malicious people to cause a DoS (Denial of Service).

1) An error in ospf6d when handling the length of IPv6 prefix structures within Link State Update messages can be exploited to crash the daemon and disrupt IPv6 routing.

2) An assertion error in ospf6d when processing Database Description messages can be exploited to terminate the daemon and disrupt IPv6 routing.

3) An error in ospfd when processing Hello messages can be exploited to crash the daemon and disrupt IPv4 routing.

4) An error in ospfd when processing Link State Advertisement (LSA) types within Link State Update messages can be exploited to crash the daemon and disrupt IPv4 routing.

5) An error in bgpd when handling AS_PATH attributes within UPDATE messages can be exploited to cause a heap-based buffer overflow resulting in a crash of the daemon and disruption of IPv4 routing.

The vulnerabilities are reported in versions prior to 0.99.19.


Solution:
Update to version 0.99.20.

Provided and/or discovered by:
Riku Hietamäki, Tuomo Untinen, and Jukka Taimisto, Codenomicon CROSS project via CERT-FI.

Regression in 0.99.19 reported by YAMAMOTO Shigeru.

Original Advisory:
Quagga:
http://www.quagga.net/download/quagga-0.99.19.changelog.txt
http://www.quagga.net/download/quagga-0.99.20.changelog.txt

CERT-FI:
https://www.cert.fi/en/reports/2011/vulnerability539178.html

YAMAMOTO Shigeru:
http://lists.quagga.net/pipermail/quagga-dev/2011-September/008910.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Quagga Multiple Denial of Service Vulnerabilities

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