CVE-2018-0409: cisco systems, inc. telepresence video communication server (vcs) and expressway Improper Input Validation

Vulnerability summary

CVE-2018-0409 is a high (CVSS 7.5) Improper Input Validation vulnerability in cisco systems, inc. telepresence video communication server (vcs) and expressway. EPSS estimates a 3.49% chance of exploitation in the next 30 days, higher than 88.9% of scored vulnerabilities.

Timeline

1. 15-08-2018
   PublishedVulnerability first disclosed.
2. 26-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the XCP Router service of the Cisco Unified Communications Manager IM & Presence Service (CUCM IM&P) and the Cisco TelePresence Video Communication Server (VCS) and Expressway could allow an unauthenticated, remote attacker to cause a temporary service outage for all IM&P users, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a malicious IPv4 or IPv6 packet to an affected device on TCP port 7400. An exploit could allow the attacker to overread a buffer, resulting in a crash and restart of the XCP Router service. Cisco Bug IDs: CSCvg97663, CSCvi55947.

• CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.