==================================================================== CERT-Renater Note d'Information No. 2021/VULN301 _____________________________________________________________________ DATE : 01/06/2021 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Cisco ASA Software, Cisco SMA, Cisco ESA, Cisco WSA, Cisco FTD Software. ===================================================================== https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lasso-saml-jun2021-DOXNRLkD _____________________________________________________________________ Lasso SAML Implementation Vulnerability Affecting Cisco Products: June 2021 High Advisory ID: cisco-sa-lasso-saml-jun2021-DOXNRLkD First Published: 2021 June 1 12:30 GMT Version 1.0: Interim Workarounds: No workarounds available CVE-2021-28091 CWE-269 Summary On June 1, 2021, Lasso disclosed a security vulnerability in the Lasso Security Assertion Markup Language (SAML) Single Sign-On (SSO) library. This vulnerability could allow an authenticated attacker to impersonate another authorized user when interacting with an application. For a description of this vulnerability, see lasso.git NEWS. This advisory will be updated as additional information becomes available. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lasso-saml-jun2021-DOXNRLkD Affected Products Cisco is investigating its product line to determine which products may be affected by this vulnerability and the impact on each affected product. As the investigation progresses, Cisco will update this advisory with information about affected products. The Vulnerable Products section includes Cisco bug IDs for each affected product. The bugs are accessible through the Cisco Bug Search Tool and contain additional platform-specific information, including workarounds (if available) and fixed software releases. Vulnerable Products The following table lists Cisco products that are affected by the vulnerabilities that are described in this advisory. If a future release date is indicated for software, the date provided represents an estimate based on all information known to Cisco as of the Last Updated date at the top of the advisory. Availability dates are subject to change based on a number of factors, including satisfactory testing results and delivery of other priority features and fixes. If no version or date is listed for an affected component (indicated by a blank field and/or an advisory designation of Interim), Cisco is continuing to evaluate the fix and will update the advisory as additional information becomes available. After the advisory is marked Final, customers should refer to the associated Cisco bug(s) for further details. Product Cisco Bug ID Fixed Release Availability Network and Content Security Devices Cisco Adaptive Security Appliance (ASA) Software Affected features: Clientless WebVPN and AnyConnect VPN (only when SSO is enabled) CSCvx73164 9.8.4.38 (Jun 2021) 9.12.4.24 (available) 9.14.3 (Jun 2021) 9.15.1.15 (available) 9.16.1.3 (available) Cisco Content Security Management Appliance (SMA) Affected feature: Web-based management interface (only when SSO is enabled) CSCvx73156 13.8.1 (available) 14.1.0 (Jul 2021) Cisco Email Security Appliance (ESA) Affected feature: Web-based management interface (only when SSO is enabled) CSCvx73154 14.0.0-692 GD (available) Cisco FXOS Software CSCvx73164 2.2.2.149 (TBD) 2.3.1.216 (available) 2.6.1.230 (TBD) 2.7.1.143 (available) 2.8.1.152 (available) 2.9.1.143 (available) Cisco Web Security Appliance (WSA) CSCvx73157 14.0.1 (Sep 2021) Cisco Firepower Threat Defense (FTD) Software Affected feature: AnyConnect VPN1 CSCvx73164 6.4.0.12 (available) 6.6.5 (Jul 2021) 6.7.0.2 (available) 7.0.0 (available) Network Management and Provisioning Cisco Prime Collaboration Assurance CSCvx73162 12.1 SP4 ES (TBD) 1. The AnyConnect VPN is configurable only through FlexConfig for Cisco FTD releases earlier than Release 6.7. The Cisco software releases listed in the following table have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability. Cisco Software End-of-Life Releases ASA Software 9.7 and earlier 9.9 9.10 9.13 FXOS Software 2.4.1 2.7.1 FTD Software 6.0.1 and earlier 6.2.0 6.2.1 6.5 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 the following products and services: Network and Content Security Devices Cisco AMP Virtual Private Cloud Appliance Network Management and Provisioning Cisco Prime Collaboration Provisioning Unified Computing Cisco UCS B-Series M5 Blade Servers Cisco UCS C-Series M5 Rack Servers - Managed Video, Streaming, TelePresence, and Transcoding Devices Cisco Video Surveillance Media Server Cisco Video Surveillance Operations Manager Cisco Vision Dynamic Signage Director Workarounds There are no workarounds that address this vulnerability. Fixed Software For information about fixed software releases, consult the Cisco bugs identified in the Vulnerable Products section of this advisory. 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. Exploitation and Public Announcements The Cisco Product Security Incident Response Team (PSIRT) is aware that proof-of-concept exploit code is available for the vulnerability that are described in this advisory. The Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory. Source Cisco would like to thank the Best Buy Enterprise Information Protection team and Sam Tinklenberg for discovering this vulnerability Cisco would also like to thank Akamai for bringing this vulnerability to our attention and working with us on it. URL https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lasso-saml-jun2021-DOXNRLkD Revision History Version Description Section Status Date 1.0 Initial public release. — Interim 2021-JUN-01 LEGAL 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. CISCO EXPECTS TO UPDATE THIS DOCUMENT AS NEW INFORMATION BECOMES AVAILABLE. A standalone 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. The information in this document is intended for end users of Cisco products. ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23/25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email:cert@support.renater.fr + =========================================================