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AUSCERT External Security Bulletin Redistribution
ESB-2013.0739
Cisco ISM Malformed Authentication Header Packet Denial of
Service Vulnerability
27 May 2013
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco ISM
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2013-1241
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1241
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Cisco Security Notice
Cisco ISM Malformed Authentication Header Packet Denial of Service
Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1241
CVE ID: CVE-2013-1241
Release Date: 2013 May 6 06:57 UTC (GMT)
Last Updated: 2013 May 7 17:34 UTC (GMT)
Summary
A vulnerability in authentication header packets processing on the Cisco ISM
module for ISR G2 could allow an authenticated, remote attacker to cause a
reload of the affected module.
The vulnerability is due to improper processing of malformed authentication
header packets. An attacker could exploit this vulnerability by sending a
stream of malformed authentication header packets over an established IPSec
security association. An exploit could allow the attacker to cause a reload of
the affected module resulting in a Denial of Service (DoS) condition for IPSec
traffic.
Affected Products
Product More Information CVSS
IOS CSCub92025 6.3/5.2
What Is a Cisco Security Notice?
The Cisco Product Security Incident Response Team (PSIRT) publishes Cisco
Security Notices to inform customers of low- to mid-level severity security
issues involving Cisco products.
Customers who wish to upgrade to a software version that includes fixes for
these issues should contact their normal support channels. Free software updates
will not be provided for issues that are disclosed through a Cisco Security
Notice.
For additional information about Cisco PSIRT publications, see the Cisco
Security Vulnerability Policy at
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html
Customers Using Third-Party Support Organizations
Customers may have Cisco products that are provided or maintained through prior
or existing agreements with third-party support organizations, such as Cisco
Partners, authorized resellers, or service providers. For these products,
customers should consult their service providers or support organizations to
ensure that any applied workaround or fix is the most appropriate in the
intended network before it is deployed.
Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A stand-alone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy, and may lack important information
or contain factual errors.
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