Headline
CVE-2020-3583: Cisco Security Advisory: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Interface Cross-Site Scripting Vulnerabilities
Multiple vulnerabilities in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the web services interface of an affected device. The vulnerabilities are due to insufficient validation of user-supplied input by the web services interface of an affected device. An attacker could exploit these vulnerabilities by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive, browser-based information. Note: These vulnerabilities affect only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.
When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, 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.
Fixed Releases
At the time of publication, the release information in the following table(s) was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerabilities described in this advisory and which release included the fix for these vulnerabilities.
Note: It was found that the fix for CVE-2020-3581 was incomplete and is now fixed and tracked by CSCvw53796. The First Fixed Release for These Vulnerabilities column has been updated to account for the complete fix.
Cisco ASA Software
Cisco ASA Software Release
First Fixed Release for These Vulnerabilities
Earlier than 9.61
Migrate to a fixed release.
9.61
Migrate to a fixed release.
9.71
Migrate to a fixed release.
9.8
9.8.4.34
9.9
9.9.2.85
9.101
Migrate to a fixed release.
9.12
9.12.4.13
9.13
9.13.1.21
9.14
9.14.2.8
9.15
9.15.1.15
1. Cisco ASA Software releases 9.7 and earlier, as well as Release 9.10, have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for these vulnerabilities.
Cisco FTD Software
Cisco FTD Software Release
First Fixed Release for These Vulnerabilities
Earlier than 6.2.21
Migrate to a fixed release.
6.2.2
Migrate to a fixed release.
6.2.3
Migrate to a fixed release.
6.3.0
Migrate to a fixed release.
6.4.0
6.4.0.12 (May 2021)
6.5.0
Migrate to a fixed release.
6.6.0
6.6.42
6.7.0
6.7.0.2
1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as releases 6.2.0 and 6.2.1, have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for these vulnerabilities.
2. The First Fixed Release for the 6.6.0 code train was 6.6.3; however, due to upgrade issues associated with CSCvx86231 the recommended release is 6.6.4.
To upgrade to a fixed release of Cisco FTD Software, do one of the following:
- For devices that are managed by using Cisco Firepower Management Center (FMC), use the FMC interface to install the upgrade. After installation is complete, reapply the access control policy.
- For devices that are managed by using Cisco Firepower Device Manager (FDM), use the FDM interface to install the upgrade. After installation is complete, reapply the access control policy.