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AUSCERT External Security Bulletin Redistribution
ESB-2013.0560
Cisco ASA Software VPN Group Enumeration Vulnerability
19 April 2013
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco ASA
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2013-1199 CVE-2013-1194
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1194
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1199
Comment: This bulletin contains two (2) Cisco Systems security advisories.
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Cisco Security Notice
Cisco ASA Software VPN Group Enumeration Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1194
CVE ID: CVE-2013-1194
Release Date: 2013 April 17 12:00 UTC (GMT)
Last Updated: 2013 April 17 12:00 UTC (GMT)
Summary
A vulnerability in the Internet Security Association and Key Management
Protocol (ISAKMP) implementation in Cisco Adaptive Security Appliance (ASA)
Software could allow an unauthenticated, remote attacker to enumerate remote
access VPN groups configured in a Cisco ASA device.
The vulnerability is due to differences in the way Cisco ASA Software responds
to Internet Key Exchange (IKE) aggressive mode messages when valid and invalid
VPN groups are provided in the AM1 message. An attacker could exploit this
vulnerability by sending crafted IKE messages to a Cisco ASA device that is
configured as a VPN headend.
This vulnerability was discovered by Daniel Turner of Trustwave SpiderLabs.
Cisco would like to thank Trustwave SpiderLabs for reporting this issue and
working with us toward coordinated disclosure of this vulnerability.
Affected Products
Product More Information CVSS
Cisco Adaptive Security Appliance CSCue73708 5.0/4.1
(ASA) Software
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.
- -------------------------------------------------------------------------------
Cisco Security Notice
Cisco ASA Clientless SSL VPN CIFS Denial of Service Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1199
CVE ID: CVE-2013-1199
Release Date: 2013 April 17 11:53 UTC (GMT)
Last Updated: 2013 April 17 11:53 UTC (GMT)
Summary
A vulnerability in the implementation of the rewriter module of the Cisco
Adaptive Security Appliance (ASA) Clientless SSL VPN could allow an
authenticated, remote attacker to cause a reload of the affected system.
The vulnerability is due to a race condition while accessing resources via the
Common Internet File System (CIFS) protocol. An attacker could exploit this
vulnerability by creating multiple Clientless SSL VPN sessions and trying to
recreate the race condition.
Affected Products
Product More Information CVSS
Cisco Adaptive Security Appliance CSCub58996 4.9/4.0
(ASA) Software
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.
- --------------------------END INCLUDED TEXT--------------------
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