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AUSCERT External Security Bulletin Redistribution
ESB-2017.1105.2
Cisco CallManager Express Unauthorized Access Vulnerability
26 July 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco CallManager Express
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-6624
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170503-cme1
Revision History: July 26 2018: Vendor updated bulletin with new defect.
May 4 2017: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco CallManager Express Unauthorized Access Vulnerability
Medium
Advisory ID: cisco-sa-20170503-cme1
First Published: 2017 May 3 16:00 GMT
Last Updated: 2018 July 25 15:33 GMT
Version 1.2: Final
Workarounds: No workarounds available
Cisco Bug IDs:
CSCuy40939
CSCvk48070
CVE-2017-6624
CVSS Score: Base 5.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:X/RL:X/RC:X
Summary
A vulnerability in Cisco IOS Software for Cisco CallManager Express (CME)
could allow an unauthenticated, remote attacker to make unauthorized phone
calls.
The vulnerability is due to a configuration restriction in the toll-fraud
protections component of the affected software. An attacker could exploit
this vulnerability to place unauthorized, long-distance phone calls by
using an affected 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-20170503-cme1
Affected Products
Vulnerable Products
This vulnerability affects Cisco IOS Software for Cisco CallManager
Express. For information about affected software releases, consult the
Cisco bug ID(s) at the top of this advisory.
Products Confirmed Not Vulnerable
No other Cisco products are currently 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 Paolo Bevilacqua for finding and 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.
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20170503-cme1
Revision History
+-----------------------------------------------------------------------------+
| Version | Description | Section | Status | Date |
|---------+---------------------------------+---------+--------+--------------|
| 1.2 | Added new defect. | Summary | Final | 2018-July-25 |
|---------+---------------------------------+---------+--------+--------------|
| | Added acknowledgement and | | | |
| 1.1 | thanks to the researcher who | Source | Final | 2017-May-24 |
| | found the vulnerability. | | | |
|---------+---------------------------------+---------+--------+--------------|
| 1.0 | Initial public release. | ? | Final | 2017-May-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.
- --------------------------END INCLUDED TEXT--------------------
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