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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.3644 Cisco Adaptive Security Appliance Software Web-Based Management Interface Reflected Cross-Site Scripting Vulnerability 23 October 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Adaptive Security Appliance Software Publisher: Cisco Systems Operating System: Cisco Impact/Access: Cross-site Scripting -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2020-3599 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-rxss-L54Htxp - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Adaptive Security Appliance Software Web-Based Management Interface Reflected Cross-Site Scripting Vulnerability Priority: Medium Advisory ID: cisco-sa-asa-rxss-L54Htxp First Published: 2020 October 21 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvv33712 CVE-2020-3599 CWE-79 Summary o A vulnerability in the web-based management interface of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability 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 access sensitive, browser-based information. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-asa-rxss-L54Htxp Affected Products o Vulnerable Products At the time of publication, this vulnerability affected Cisco products if they were running a vulnerable release of Cisco ASA Software and had web management access enabled. For information about which Cisco software releases are vulnerable, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. Determine the Device Configuration To determine whether web management is enabled, use the show running-config http command. The following example shows the output of the command for a device that has the web management feature enabled and that allows access to the web management feature from the 10.10.10.0/24 network through the management interface: ciscoasa# show running-config http http server enable http 10.10.10.0 255.255.255.0 Management Note: The device would only be vulnerable to requests that are sent from an IP address in the range that is configured in the http <remote_ip_address> <remote_subnet_mask> <interface_name> command. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Cisco has confirmed that this vulnerability does not affect Cisco Firepower Threat Defense (FTD) Software or Cisco Firepower Management Center (FMC) Software. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o 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 vulnerability described in this advisory and which release included the fix for this vulnerability. Cisco ASA Software Cisco ASA Software Release First Fixed Release for This Vulnerability Earlier than 9.6 ^1 Migrate to a fixed release. 9.6 ^1 9.6.4.45 9.7 ^1 Migrate to a fixed release. 9.8 9.8.4.29 9.9 9.9.2.80 9.10 9.10.1.43 9.12 9.12.4.4 9.13 9.13.1.13 9.14 9.14.1.29 1. Cisco ASA Software releases 9.7 and earlier have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability. Exploitation and Public Announcements o The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. Source o Cisco would like to thank Phil Purviance for reporting this vulnerability. Cisco Security Vulnerability Policy o 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. Related to This Advisory o Cross-Site Scripting URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-asa-rxss-L54Htxp Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2020-OCT-21 | +----------+---------------------------+----------+--------+--------------+ - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBX5IdLeNLKJtyKPYoAQg1nxAAgP49NZWWSA9W8pRueHOnQA2+mpAroSAF fMBHGFoPaGRytAWxUFusYHDOsHGjR+4yD+cvSYm7taty9sE+vI/gMAfQ5G6OCuuF ExKXk5XQBARsm30iEUNWsQsuAu1P6MRCQGNuO/u47TlyfV9ibJH0S2ZeYsTx4KaI MFV0+QBasJ92r65Ox7kXReogVPw0+ThnCSL3ruZ+eqPCtqYBccLFS6FrhKh5e9qZ HfVr6b6TMe6sr9I1yU/xKAUCC7AJupeJazRXi5AeR7l09Uzu7vFpwCGf2IVrP8O2 xfJ5vwQE78GsLWTu5bMLCelPLE5uGWExK6FYKXEKiLGD9m6RiP5XinCNukcjkpb6 nipNdg+U1eQQzzMO76UQFzIlQbJskTuZq0oxIUIVJlHePHpQ7QoQbZ/+2ZzVSQg/ UyTWECpYkLjS0wkv/NI2I2GonMUbUpzq0o4wZc9kayBtpLvSAdObtIfKuwG0i31O +jKeUpCFgpmMqDqaB81NzUsiZL8sdaw1fcEM/GqHHQAEb+AGttUqruurYjmln9K+ l0vxAAmj9Qb5he2ihsu+ipcG3zRsr+p6RvnNKcVTp0Jre+ajJHywHxkxuipLmofA eAb4u4oqA3TspNbJGNI1W2EWbteruAnSGW4On2EyvOKeVQ03Qy0RPtN6akbEsW5K uN59aJnKK4A= =YiZd -----END PGP SIGNATURE-----