Out-of-bounds Read in Cisco Telepresence Video Communication Server

CVE-2018-0409

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.035 (88.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

  • psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
  • psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
  • psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
  • psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
  • psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2018-0409?
CVE-2018-0409 is a high-severity vulnerability in Cisco Telepresence Video Communication Server, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2018-08-15.
How severe is CVE-2018-0409?
High severity. CVSS v3 base score is 7.5 out of 10.