CVE-2021-1503 Cisco Webex Network Recording Player and Webex Player Memory Corruption Vulnerability
Attackers can execute arbitrary code by tricking users into opening malicious Webex recording files, requiring immediate patching of the player software.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-1503?
CVE-2021-1503 is a high-severity memory corruption vulnerability in Cisco Webex Meetings Server, published on 4 Jun 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A vulnerability in Cisco Webex Network Recording Player for Windows and MacOS and Cisco Webex Player for Windows and MacOS could allow an attacker to execute arbitrary code on an affected system. This vulnerability is due to insufficient validation of values in Webex recording files that are in either Advanced Recording Format (ARF) or Webex Recording Format (WRF). An attacker could exploit this vulnerability by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.
Which versions are affected by CVE-2021-1503?
It affects 2 products.
Products include Cisco Webex Meetings Server, Cisco Webex Player.
How do I fix CVE-2021-1503?
No fix has been published for CVE-2021-1503 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-1503 being exploited?
There is no known exploitation of CVE-2021-1503 in the wild and no public exploit code.
Other vulnerabilities in Cisco Webex Meetings Server
- CVE-2017-12367 Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players
- CVE-2015-0589 Command injection in n/a
- CVE-2017-3794 Cross-site request forgery in Cisco WebEx Meetings Server 2.6
- CVE-2016-1448 Cross-site request forgery in n/a
- CVE-2016-1446 SQL injection in n/a
Sources
Also known as GHSA-gwp9-m42j-2f54.