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TITLE:
Cisco IOS Zone-Based Firewall Multiple Denial of Service
Vulnerabilities

SECUNIA ADVISORY ID:
SA48608

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48608/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48608

RELEASE DATE:
2012-03-29

DISCUSS ADVISORY:
http://secunia.com/advisories/48608/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/48608/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=48608

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

1) An error within the Zone-Based Firewall implementation when
handling certain IP packets can be exploited to cause memory leaks
and restart a device via specially crafted packets sent to a
configured address on the device.

NOTE: Transit traffic packets do not trigger this vulnerability.

2) An error within the HTTP Inspection engine when handling certain
HTTP messages can be exploited to cause memory leaks and restart a
device via specially crafted messages that transit the device.

3) An error within the H.323 inspection feature when handling certain
H.323 messages can be exploited to cause memory leaks and restart a
device via specially crafted messages that transit the device.

4) An error within the SIP inspection feature when handling certain
SIP messages can be exploited to cause memory leaks and restart a
device via specially crafted messages that transit the device.

Please see the vendor's advisory for a list of affected versions.

SOLUTION:
Update to a fixed version (please see the vendor's advisory for
details).

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

ORIGINAL ADVISORY:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-zbfw

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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