Information disclosure in Cisco Unified Communications Manager

1) File and Directory Information Exposure

EUVDB-ID: #VU51965

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-1406

CWE-ID: CWE-538 - File And Directory Information Exposure

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to improper inclusion of sensitive information in downloadable files. A remote authenticated user can issue a set of commands to obtain hashed credentials of system users.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Unified Communications Manager Session Management Edition: before 12.5.1.15900.6

Unified Communications Manager (CallManager): before 12.5.1.15000.23

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_unified_communications_manager_session_management_edition:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:unified_communications_manager_callmanager:*:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-inf-disc-wCxZNjL2
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv21048

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.