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AUSCERT External Security Bulletin Redistribution
ESB-2018.2998
Cisco Expressway Series and Cisco TelePresence Video
Communication Server Remote Code Execution Vulnerability
4 October 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Expressway Series
Cisco TelePresence Video Communication Server
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-15430
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181003-express-vcs-rce
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Cisco Security Advisory
Cisco Expressway Series and Cisco TelePresence Video Communication Server
Remote Code Execution Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20181003-express-vcs-rce
First Published: 2018 October 3 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvi50935
CVE-2018-15430
CWE-20
CVSS Score: Base 4.7
CVSS: 3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
Summary
A vulnerability in the administrative web interface of Cisco Expressway
Series and Cisco TelePresence Video Communication Server (VCS) could allow
an authenticated, remote attacker to execute code with user-level
privileges on the underlying operating system.
The vulnerability is due to insufficient validation of the content of
upgrade packages. An attacker could exploit this vulnerability by uploading
a malicious archive to the Upgrade page of the administrative web
interface. A successful exploit could allow the attacker to execute code
with user-level privileges on the underlying operating system.
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-20181003-express-vcs-rce
Affected Products
* Vulnerable Products
This vulnerability affects Cisco Expressway Series Software and Cisco
TelePresence Video Communication Server (VCS) Software. For information
about affected software releases, consult the Cisco bug ID(s) at the top 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.
Workarounds
* There are no workarounds that address this vulnerability.
Fixed Software
* For information about fixed software releases, consult the Cisco bug ID(s)
at the top 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 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.
Exploitation and Public Announcements
* 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
* Cisco would like to thank Richard Warren of NCC Group for reporting this
vulnerability.
Cisco Security Vulnerability Policy
* 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.
Subscribe to Cisco Security Notifications
* Subscribe
URL
* https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181003-express-vcs-rce
Revision History
+-----------------------------------------------------------------------------+
| Version | Description | Section | Status | Date |
|----------+---------------------------+----------+--------+------------------|
| 1.0 | Initial public release. | ? | Final | 2018-October-03 |
+-----------------------------------------------------------------------------+
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.
Cisco Security Vulnerability Policy
* 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.
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