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AUSCERT External Security Bulletin Redistribution
ESB-2014.2245
Cisco ASA SSL VPN Memory Blocks Exhaustion Vulnerability
28 November 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Adaptive Security Appliance
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-3407
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3407
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Cisco Security Notice
Cisco ASA SSL VPN Memory Blocks Exhaustion Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3407
CVE ID: CVE-2014-3407
Release Date: 2014 November 26 16:57 UTC (GMT)
Last Updated: 2014 November 26 18:44 UTC (GMT)
Summary
A vulnerability in the SSL VPN feature of Cisco ASA Software could allow an
unauthenticated, remote attacker to cause the exhaustion of available memory,
which could lead to system instability and availability issues on the SSL VPN
services.
The vulnerability is due to improper implementation of memory block allocation
when processing crafted HTTP packets. An attacker could exploit this
vulnerability by sending a crafted HTTP packet to the affected system. The
vulnerability can be exploited if SSL VPN is enabled.
Affected Products
Product More Information CVSS
Cisco Adaptive Security Appliance (ASA) Software CSCuq68888 5.0/4.1
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/web/about/security/psirt/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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