Multiple Remote Denial of Service Vulnerabilities in the Cisco IOS Zone-Based Firewall feature

Release date:
Updated on:

Affected Systems:
Cisco IOS 15.x
Unaffected system:
Cisco IOS 15.2 (3) T
Cisco IOS 15.2 (3) T
Cisco IOS 15.2 (2) T1
Cisco IOS 15.2 (1) T2
Cisco IOS 15.2 (1) GC2
Cisco IOS 15.1 (4) M4
Cisco IOS 15.1 (4) M4
Cisco IOS 15.1 (4) M3a
Cisco IOS 15.1 (4) M3
Cisco IOS 15.1 (3) T3
Cisco IOS 15.1 (3) T3
Cisco IOS 15.1 (3) S2
Cisco IOS 15.1 (2) GC2
Cisco IOS 15.1 (2) GC2
Cisco IOS 15.1 (2) EY2
Cisco IOS 15.1 (1) T5
Cisco IOS 15.0SG
Cisco IOS 15.0SE
Cisco IOS 15.0SE
Cisco IOS 15.0SA
Cisco IOS 15.0MRA
Cisco IOS 15.0MR
Cisco IOS 15.0 (1) M8
Description:
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Bugtraq id: 52753
Cve id: CVE-2012-0387, CVE-2012-1310, CVE-2012-0388, CVE-2012-1315

Cisco's Internet Operating System (IOS) is a complex operating system optimized for Internet connection.

Multiple security vulnerabilities exist in the implementation of the ZFW function of Cisco IOS. Remote attackers can exploit these vulnerabilities to cause device overloading.

1) Memory leakage may occur when a specially crafted IP packet is sent to the IP address of the affected device.

2) The HTTP Inspection Engine has a vulnerability in implementation. The affected devices may cause memory leakage when processing some HTPP messages.

3) The implementation of the Cisco IOS Software H.323 detection function allows remote attackers to cause system instability.

4) Memory leakage occurs when Cisco IOS processes specially crafted SIP messages.

5) The show memory debug leaks command is used in Cisco IOS Software v12.3 (8) T1 and 12.2 (25) S. memory leakage exists in the process FW h225 tpkt.

<* Source: Cisco

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

Http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-zbfw
*>

Suggestion:
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Vendor patch:

Cisco
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Cisco has released a Security Bulletin (cisco-sa-20120328-zbfw) and patches for this:

Cisco IOS Software Zone-Based Firewall Vulnerabilities

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