Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.1170
Cisco Unified Communications Manager Self Care Portal
Authorization Bypass Vulnerability
8 April 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Unified Communications Manager (Unified CM)
Cisco Unified Communications Manager Session Management Edition (Unified CM SME)
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Unauthorised Access -- Existing Account
Modify Arbitrary Files -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-1399
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-selfcare-VRWWWHgE
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Unified Communications Manager Self Care Portal Authorization Bypass
Vulnerability
Priority: Medium
Advisory ID: cisco-sa-cucm-selfcare-VRWWWHgE
First Published: 2021 April 7 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvw88205
CVE Names: CVE-2021-1399
CWEs: CWE-302
Summary
o A vulnerability in the Self Care Portal of Cisco Unified Communications
Manager (Unified CM) and Cisco Unified Communications Manager Session
Management Edition (Unified CM SME) could allow an authenticated, remote
attacker to modify data on an affected system without proper authorization.
The vulnerability is due to insufficient validation of user-supplied data
to the Self Care Portal. An attacker could exploit this vulnerability by
sending a crafted HTTP request to an affected system. A successful exploit
could allow the attacker to modify information without proper
authorization.
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-cucm-selfcare-VRWWWHgE
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected the following
releases of Cisco Unified CM and Unified CM SME:
10.5(2), all releases
11.0(1), all releases
11.5(1), all releases
12.0(1), all releases
12.5(1), releases earlier than Release 12.5(1)SU4
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 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 Unified CM and Unified CM SME releases
12.5(1)SU4 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 Cisco would like to thank Mohamed Youssef of Cysiv for finding and
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-cucm-selfcare-VRWWWHgE
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2021-APR-07 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=gE3H
-----END PGP SIGNATURE-----