PT-2019-2650 · Cisco · Cisco Unified Communications Manager

Published 2019-07-03 · Updated 2019-10-09 · CVE-2019-1887

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco Unified Communications Manager (affected versions not specified)

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

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2019-02536

CVE-2019-1887

Affected Products

Cisco Unified Communications Manager

References · 6

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-cucm-dos · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-1887 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-02536 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-1887 · Security Note
• https://t.me/cvenotify/270 · Telegram Post
• https://tools.cisco.com/security/center/publicationListing.x · Note