CVE-2021-1536 Cisco Webex Meetings, Webex Network Recording Player, and Webex Teams DLL Injection Vulnerability
Local authenticated attackers can execute arbitrary code with elevated privileges via DLL injection in Cisco Webex applications.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-1536?
CVE-2021-1536 is a medium-severity code injection vulnerability in Cisco Webex Meetings Online, 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 Meetings Desktop App for Windows, Cisco Webex Meetings Server, Cisco Webex Network Recording Player for Windows, and Cisco Webex Teams for Windows could allow an authenticated, local attacker to perform a DLL injection attack on an affected device. To exploit this vulnerability, the attacker must have valid credentials on the Windows system. This vulnerability is due to incorrect handling of directory paths at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path in the system, which can cause a malicious DLL file to be loaded when the application starts. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of another user account.
Weakness: CWE-427
Which versions are affected by CVE-2021-1536?
It affects 5 products.
Products include Cisco Webex Meetings Desktop, Cisco Webex Meetings Online, Cisco Webex Meetings Server, Cisco Webex Network Recording Player, Cisco Webex Teams.
How do I fix CVE-2021-1536?
No fix has been published for CVE-2021-1536 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-1536 being exploited?
There is no known exploitation of CVE-2021-1536 in the wild and no public exploit code.
Other vulnerabilities in Cisco Webex Meetings Online
Sources
Also known as GHSA-hwgc-9p3v-8ffx.