CVE-2014-3318

Vulnerability

A directory traversal vulnerability exists in the dna/viewfilecontents.do endpoint of the Dialed Number Analyzer (DNA) component in Cisco Unified Communications Manager. This flaw allows remote authenticated users to read arbitrary files on the system by supplying a crafted URL containing path traversal sequences. Affected versions include all releases prior to the patched version mentioned in Cisco Bug ID CSCup76318; the vulnerability is documented in Cisco Security Notice CVE-2014-3318 [1].

Exploitation

An attacker must have valid authentication credentials to the Cisco Unified Communications Manager web interface. No additional privileges or user interaction beyond authentication are required. The attack is executed by sending a crafted HTTP request to the vulnerable dna/viewfilecontents.do endpoint, embedding directory traversal sequences (e.g., ../) in the URL to navigate outside the intended directory and access arbitrary files on the server [1].

Impact

Successful exploitation allows the attacker to read arbitrary files from the underlying operating system of the Cisco Unified Communications Manager server. This could lead to disclosure of sensitive configuration files, credentials, or other confidential data, violating the confidentiality of the system [1].

Mitigation

Cisco has released a software update to address the vulnerability. Users should upgrade to a fixed version of Cisco Unified Communications Manager as referenced in Cisco Bug ID CSCup76318. No workarounds are documented in the available references. The vulnerability is not listed on CISA's Known Exploited Vulnerabilities (KEV) catalog [1].