Path traversal in Cisco Unified Communications Manager (UCM) and Unified Communications Manager Session Management Edition (SME)
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-3177 |
| CWE-ID | CWE-22 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Unified Communications Manager (CallManager) Server applications / Remote management servers, RDP, SSH Cisco Unified Communications Manager Session Management Edition Server applications / Remote management servers, RDP, SSH |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Path traversal
EUVDB-ID: #VU26981
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-3177
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the Tool for Auto-Registered Phones Support (TAPS). A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
MitigationInstall update from vendor's website.
Vulnerable software versionsUnified Communications Manager (CallManager): 10.5 - 12.5
Cisco Unified Communications Manager Session Management Edition: 10.5 - 12.5
CPE2.3- cpe:2.3:a:cisco_systems:unified_communications_manager_callmanager:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco_systems:unified_communications_manager_callmanager:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:cisco_systems:unified_communications_manager_callmanager:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco_systems:cisco_unified_communications_manager_session_management_edition:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco_systems:cisco_unified_communications_manager_session_management_edition:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:cisco_systems:cisco_unified_communications_manager_session_management_edition:11.0:*:*:*:*:*:*:*
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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.
