#VU51965 File and Directory Information Exposure in Cisco Unified Communications Manager Session Management Edition and Unified Communications Manager (CallManager) - CVE-2021-1406

Vulnerability identifier: #VU51965

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Unified Communications Manager Session Management Edition
Server applications / Remote management servers, RDP, SSH
Unified Communications Manager (CallManager)
Server applications / Remote management servers, RDP, SSH

Vendor: Cisco Systems, Inc

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

---

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.

Is there known malware, which exploits this vulnerability?

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