PT-2020-5129 · Cisco · Cisco Telepresence Video Communication Server+1

Published 2020-10-07 · Updated 2020-10-16 · CVE-2020-3596

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Cisco Expressway Series (affected versions not specified) Cisco TelePresence Video Communication Server (VCS) (affected versions not specified)

Description A vulnerability in the Session Initiation Protocol (SIP) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The issue is due to incorrect handling of incoming SIP traffic. An attacker could exploit this by sending a series of SIP packets to an affected device, potentially exhausting memory and causing the device to crash.

Recommendations For Cisco Expressway Series, at the moment, there is no information about a newer version that contains a fix for this vulnerability. For Cisco TelePresence Video Communication Server (VCS), at the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-789

CWE-670

Related Identifiers

BDU:2020-05725

CVE-2020-3596

Affected Products

Cisco Expressway Series

Cisco Telepresence Video Communication Server

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-vcs-dos-n6xxTMZB · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3596 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3596 · Security Note
• https://bdu.fstec.ru/vul/2020-05725 · Security Note
• https://cybersecurity-help.cz/vdb/SB2020101308 · Note