High severity · published Apr 15, 2020
CVE-2020-3177
A vulnerability in the Tool for Auto-Registered Phones Support (TAPS) of Cisco Unified Communications Manager (UCM) and Cisco Unified Communications Manager Session Management…
7.5
CVSS
2.8%
EPSS
No
On KEV
Description
A vulnerability in the Tool for Auto-Registered Phones Support (TAPS) of Cisco Unified Communications Manager (UCM) and Cisco Unified Communications Manager Session Management Edition (SME) could allow an unauthenticated, remote attacker to conduct directory traversal attacks on an affected device. The vulnerability is due to insufficient validation of user-supplied input to the TAPS interface of the affected device. An attacker could exploit this vulnerability by sending a crafted request to the TAPS interface. A successful exploit could allow the attacker to read arbitrary files in the system.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UC
Unified Communications Manager · Cisco
10.5(2.10000.5); 11.5(1.10000.6); 12.0(1.10000.10); 12.5(1.10000.22) · source: NVD
UC
Unified Contact Center Express · Cisco
12.0(1) · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-3177
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-3177
Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-taps-path-trav-pfsFO93r
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