Main Vulnerability Database Vulnerabilities #VU53750

Buffer overflow in Cisco WebEx Network Recording Player and Webex Player - CVE-2021-1503

Published: June 2, 2021

Vulnerability identifier: #VU53750

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-1503

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing ARF and WRF files. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

Cisco WebEx Network Recording Player
Webex Player

How to mitigate CVE-2021-1503

Install updates from vendor's website.

Cisco WebEx Network Recording Player - addressed in versions 3.0 MR4, 4.0 MR4
Webex Player - update to 41.2

External References

Related Security Bulletins