THREATPORT/VULNERABILITY/CVE-2018-0409
HIGH SEVERITY

CVE-2018-0409

Telepresence Video Communication Server vulnerability

CVSS
7.5
EPSS
3.5%
EPSS pct
88th
Exploited
No known
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.
Affected vendor
Cisco
Affected product
Telepresence Video Communication Server
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-20 — Improper Input Validation
  • CWE-125 — Out-of-bounds Read
Published
2018-08-15

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 3.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2018-0409

  • Confirm whether Cisco Telepresence Video Communication Server is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-0409.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-0409

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-0409 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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