What is CVE-2019-1887?

CVE-2019-1887 is a high-severity vulnerability in Cisco Unified Communications Manager, classified under Out-of-bounds Write. CVSS score: 8.6/10. Published 2019-07-06.

How severe is CVE-2019-1887?

High severity. CVSS v3 base score is 8.6 out of 10.

Buffer overflow in Cisco Unified Communications Manager

CVE-2019-1887

A vulnerability in the Session Initiation Protocol (SIP) protocol implementation of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of input SIP traffic. An attacker could exploit this vulnerability by sending a malformed SIP packet to an affected Cisco Unified Communications Manager. A successful exploit could allow the attacker to trigger a new registration process on all connected phones, temporarily disrupting service.

Vulnerability class: Buffer Overflow

EPSS: 0.018 (76.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Cisco Unified Communications Manager — versions unspecified
Cisco Unified_communications_manager — versions 12.5\(1.10000.22\), 12.5(1.10000.22), 12.0\(1.10000.10\)

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2019-1887?: CVE-2019-1887 is a high-severity vulnerability in Cisco Unified Communications Manager, classified under Out-of-bounds Write. CVSS score: 8.6/10. Published 2019-07-06.
How severe is CVE-2019-1887?: High severity. CVSS v3 base score is 8.6 out of 10.