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TITLE:
Quagga Two Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA43770

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43770/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43770

RELEASE DATE:
2011-03-23

DISCUSS ADVISORY:
http://secunia.com/advisories/43770/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Criticality Level
 * Impact
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 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/43770/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=43770

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

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

1) A NULL-pointer dereference error when parsing certain extended
community attributes can be exploited to crash the "bgpd" daemon via
specially crafted extended community attributes.

Note: Successful exploitation may require that the attacker is a
directly configured peer.

2) An error within the AS path limit/TTL functionality when parsing
certain AS_PATHLIMIT attributes can be exploited to reset BGP
sessions by sending specially crafted AS_PATHLIMIT attributes.

The vulnerabilities are reported in versions prior to 0.99.18.

SOLUTION:
Update to version 0.99.18.

Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
Quagga:
http://www.quagga.net/news2.php?y=2011&m=3&d=21#id1300723200

DSA-2197-1:
http://lists.debian.org/debian-security-announce/2011/msg00065.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
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