Cisco Security Advisory
Cisco Security Manager Java Deserialization Vulnerabilities
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:
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.
There are no workarounds that address these vulnerabilities.
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:
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.
Cisco fixed these vulnerabilities in Cisco Security Manager Release 4.22 Service Pack 1.
To confirm the installation of a Cisco Security Manager service pack, administrators can look at the Cisco Security Manager client user interface or view the patch.info contents, which are located in the C:\Program Files (x86)\CSCOpx\MDC\vms\ directory of the Cisco Security Manager server.
The following patch.info output shows Service Pack 1 installed:
NAME=Cisco Security Manager
DESC=Cisco Security Manager
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.
Cisco would like to thank Florian Hauser for reporting these vulnerabilities.
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.
Version Description Section Status Date 1.3 Added instructions for confirming the installation of a service patch. Fixed Releases Final 2021-FEB-08 1.2 Added fixed software. Summary, Fixed Releases Final 2020-DEC-07 1.1 Updated the vulnerable release. Vulnerable Products Interim 2020-NOV-17 1.0 Initial public release. - Interim 2020-NOV-16
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