Cisco Firewall Services Module (FWSM) Software for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers is affected by the following vulnerabilities: FWSM HTTP Proxy Traceback Vulnerability IKE Version 1 Denial of Service Vulnerability These vulnerabilities are independent of each other; a release that is affected by one of the vulnerabilities may not be affected by the other. Successful exploitation of either of these vulnerabilities may result in a reload of an affected device, leading to a denial of service (DoS) condition. Cisco has released software updates that address these vulnerabilities. A workaround is available for the IKE vulnerability. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130410-fwsm Note: The Cisco Adaptive Security Appliance (ASA) may be affected by some of the vulnerabilities listed above. A separate Cisco Security Advisory has been published to disclose the vulnerabilities that affect the Cisco ASA. That advisory is available at: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130410-asa
A Cisco FWSM is affected by this vulnerability if IKE
version 1 is enabled. IKE is not enabled by default. See the "Details" section for information on determining whether a device has a vulnerable configuration.
Note: IKE on the FWSM is supported only for remote administration, not for remote network access.
aaa authentication {include | exclude} service interface_name inside_ip inside_mask [outside_ip outside_mask] {server_tag | LOCAL}
or
aaa authentication match acl_name interface_name {server_tag | LOCAL}
Note: IKE on the Cisco FWSM is supported only for remote administration, not for remote network access.
A Cisco FWSM is affected by this vulnerability if IKE
version 1 is enabled. IKE version 1 is enabled if the command isakmp enable
IKE is not enabled by default.
This vulnerability is described in Cisco bug ID CSCud20267 (registered customers only) and has been assigned CVE ID CVE-2013-1149.
When considering software upgrades, customers are advised to consult the Cisco Security Advisories, Responses, and Notices archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
The following table lists fixed and recommended versions to remediate the FWSM HTTP Proxy Traceback Vulnerability:
| Major Release |
First Fixed Release |
Recommended Release |
| 3.1 | Affected; Migrate to 3.2 |
Migrate to 3.2 |
| 3.2 | 3.2(20.1) | 3.2(25) |
| 4.0 | 4.0(15.2) |
Migrate to 4.1 |
| 4.1 | 4.1(5.1) | 4.1(12) |
The following table lists fixed and recommended versions to remediate the IKE Version 1 Denial of Service Vulnerability:
| Major Release |
First Fixed Release |
Recommended Release |
| 3.1 | Affected; Migrate to 3.2 |
Migrate to 3.2 |
| 3.2 | 3.2(24.1) | 3.2(25) |
| 4.0 | Affected; Migrate to 4.1 |
Migrate to 4.1 |
| 4.1 | 4.1(11.1) |
4.1(12) |
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
These vulnerabilities were discovered during troubleshooting of customer issues.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
| Revision 1.0 | 2013-April-10 | Initial public release |
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