CVE-2021-1527 Cisco Webex Player Memory Corruption Vulnerability
An attacker can crash the application or view memory state information by tricking a user into opening a malicious Webex recording file.
- 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-2021-1527?
CVE-2021-1527 is a medium-severity memory corruption vulnerability in Cisco Webex Meetings, 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 Player for Windows and MacOS could allow an attacker to cause the affected software to terminate or to gain access to memory state information that is related to the vulnerable application. The vulnerability is due to insufficient validation of values in Webex recording files that are stored in Webex Recording Format (WRF). An attacker could exploit this vulnerability by sending a malicious WRF file to a user as a link or email attachment and then persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to crash the affected software and view memory state information.
Which versions are affected by CVE-2021-1527?
It affects 1 product.
Products include Cisco Webex Player.
How do I fix CVE-2021-1527?
No fix has been published for CVE-2021-1527 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-2021-1527 being exploited?
There is no known exploitation of CVE-2021-1527 in the wild and no public exploit code.
Other vulnerabilities in Cisco Webex Meetings
Sources
Also known as GHSA-rq38-43xh-2f3p.