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AUSCERT External Security Bulletin Redistribution
ESB-2020.1799
Cisco Unified Contact Center Express Remote Code Execution Vulnerability
21 May 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Unified Contact Center Express
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3280
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-uccx-rce-GMSC6RKN
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Cisco Unified Contact Center Express Remote Code Execution Vulnerability
Priority: Critical
Advisory ID: cisco-sa-uccx-rce-GMSC6RKN
First Published: 2020 May 20 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvq58235CSCvq58289
CVE-2020-3280
CWE-20
CVSS Score:
9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in the Java Remote Management Interface of Cisco Unified
Contact Center Express (Unified CCX) could allow an unauthenticated, remote
attacker to execute arbitrary code on an affected device.
The vulnerability is due to insecure deserialization of user-supplied
content by the affected software. An attacker could exploit this
vulnerability 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 code as the root user on an affected device.
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-uccx-rce-GMSC6RKN
Affected Products
o Vulnerable Products
This vulnerability affects Cisco Unified CCX software.
For information about which Cisco software releases are vulnerable, see the
Fixed Software section of this advisory.
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 Unified
Contact Center.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
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 and Alerts 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
In the following table, the left column lists Cisco software releases. The
right column indicates whether a release is affected by the vulnerability
described in this advisory and the first release that includes the fix for
this vulnerability. Customers are advised to upgrade to an appropriate
fixed software release as indicated in this section.
Cisco Unified CCX Major Release First Fixed Release
Earlier than 12.0 Migrate to 12.0(1)ES03
12.0 12.0(1)ES03
12.5 Not vulnerable.
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 Brenden Meeder of Booz Allen Hamilton 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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-uccx-rce-GMSC6RKN
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-MAY-20 |
+----------+---------------------------+----------+--------+--------------+
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