Secunia Security Advisory - Multiple vulnerabilities have been reported in Cisco Firewall Services Module (FWSM), which can be exploited by malicious people to bypass certain security restrictions and cause a DoS (Denial of Service).
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TITLE:
Cisco Firewall Services Module Security Bypass and Denial of Service
Vulnerabilities
SECUNIA ADVISORY ID:
SA46278
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http://secunia.com/advisories/46278/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=46278
RELEASE DATE:
2011-10-23
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http://secunia.com/advisories/46278/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=46278
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DESCRIPTION:
Multiple vulnerabilities have been reported in Cisco Firewall
Services Module (FWSM), which can be exploited by malicious people to
bypass certain security restrictions and cause a DoS (Denial of
Service).
1) An error in the implementation of the system log message ID 302015
when generating a log message for IPv6 traffic can be exploited to
cause a memory corruption.
Successful exploitation of this vulnerability requires that the FWSM
has interfaces with IPv6 addresses.
2) An error in the authentication proxy feature during a high number
of network access authentication requests related to the "aaa
authentication match" and "aaa authentication include" commands can
be exploited to cause a crash.
3) An error in the TACACS+ implementation can be exploited to bypass
the TACACS+ authentication mechanism.
4) Four errors in the SunRPC inspection engine while processing
certain SunRPC messages can be exploited to reload a device via
specially crafted SunRPC packets that transit the appliance.
5) An error in the ILS inspection engine while processing certain ILS
messages can be exploited to reload a device via specially crafted ILS
packets that transit the appliance.
The vulnerabilities are reported in versions 3.1, 3.2, 4.0, and 4.1.
SOLUTION:
Update to version 3.1(21), 3.2(22), 4.0(16), or 4.1(7).
PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.
ORIGINAL ADVISORY:
http://www.cisco.com/warp/public/707/cisco-sa-20111005-fwsm.shtml
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
DEEP LINKS:
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EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
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EXPLOIT:
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