==================================================================== CERT-Renater Note d'Information No. 2020/VULN668 _____________________________________________________________________ DATE : 08/12/2020 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running Cisco Security Manager versions prior to 4.22 Service Pack 1. ===================================================================== https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-csm-java-rce-mWJEedcD _____________________________________________________________________ Cisco Security Manager Java Deserialization Vulnerabilities High Advisory ID: cisco-sa-csm-java-rce-mWJEedcD First Published: 2020 November 16 23:00 GMT Last Updated: 2020 December 7 15:13 GMT Version 1.2: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvu99974 CSCvv79824 CVSS Score: Base 8.1 CVE-2020-27131 CWE-20 Summary Multiple vulnerabilities in the Java deserialization function that is used by Cisco Security Manager could allow an unauthenticated, remote attacker to execute arbitrary commands on an affected device. These vulnerabilities are due to insecure deserialization of user-supplied content by the affected software. An attacker could exploit these vulnerabilities by sending a malicious serialized Java object to a specific listener on an affected system. A successful exploit could allow the attacker to execute arbitrary commands on the device with the privileges of NT AUTHORITY\SYSTEM on the Windows target host. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-csm-java-rce-mWJEedcD Affected Products Vulnerable Products These vulnerabilities affect Cisco Security Manager releases 4.22 and earlier. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by these vulnerabilities. Workarounds There are no workarounds that address these vulnerabilities. Fixed Software Cisco will release free software updates that address the vulnerabilities described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license: https://www.cisco.com/c/en/us/products/end-user-license-agreement.html Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades. 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. Customers Without Service Contracts Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Fixed Releases Cisco fixed these vulnerabilities in Cisco Security Manager Release 4.22 Service Pack 1. Exploitation and Public Announcements The Cisco Product Security Incident Response Team (PSIRT) is aware of public announcements about these vulnerabilities. Cisco PSIRT is not aware of malicious use of the vulnerabilities that are described in this advisory. Source Cisco would like to thank Florian Hauser for reporting these vulnerabilities. URL https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-csm-java-rce-mWJEedcD Revision History Version Description Section Status Date 1.2 Added fixed software. Summary, Fixed Releases Final 2020-DEC-07 1.1 Updated the vulnerable release. Vulnerable Products Interim 2020-NOV-17 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. 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 + =========================================================