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AUSCERT External Security Bulletin Redistribution
ESB-2020.1617
Cisco Hosted Collaboration Mediation Fulfillment XML
External Expansion Vulnerability
7 May 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Hosted Collaboration Mediation Fulfillment
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Read-only Data Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3256
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hcmf-xxe-qqCMAUJ2
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Hosted Collaboration Mediation Fulfillment XML External Expansion
Vulnerability
Priority: Medium
Advisory ID: cisco-sa-hcmf-xxe-qqCMAUJ2
First Published: 2020 May 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvq03653
CVE-2020-3256
CWE-611
CVSS Score:
4.9 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in the web-based management interface of Cisco Hosted
Collaboration Mediation Fulfillment (HCM-F) Software could allow an
authenticated, remote attacker to gain read access to information that is
stored on an affected system. To exploit this vulnerability, an attacker
would need administrative privileges on the Cisco HCM-F Software.
The vulnerability is due to improper handling of XML External Entity (XXE)
entries when parsing certain XML files. An attacker could exploit this
vulnerability by sending malicious requests that contain references in XML
entities to an affected system. A successful exploit could allow the
attacker to retrieve files from the local system, resulting in the
disclosure of sensitive information.
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-hcmf-xxe-qqCMAUJ2
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco HCM-F
Software releases earlier than Release 12.5(1)SU2.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o 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.
Fixed Releases
At the time of publication, Cisco HCM-F Software releases 12.5(1)SU2 and
later contained the fix for this vulnerability.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
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 This vulnerability was found during internal security testing.
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-hcmf-xxe-qqCMAUJ2
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-MAY-06 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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