CVE-2021-34426 Arbitrary command execution in Keybase Client for Windows
A malicious actor with write access to a Git repository can execute arbitrary Windows commands on a user's local system via the Keybase Client.
- 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-2021-34426?
CVE-2021-34426 is a medium-severity command injection vulnerability in Zoom Video Communications Inc Keybase Client for Windows, published on 14 Dec 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 was discovered in the Keybase Client for Windows before version 5.6.0 when a user executed the "keybase git lfs-config" command on the command-line. In versions prior to 5.6.0, a malicious actor with write access to a user\'s Git repository could leverage this vulnerability to potentially execute arbitrary Windows commands on a user\'s local system.
Which versions are affected by CVE-2021-34426?
It affects 1 product.
Products include Keybase Keybase.
How do I fix CVE-2021-34426?
No fix has been published for CVE-2021-34426 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2021-34426 being exploited?
There is no known exploitation of CVE-2021-34426 in the wild and no public exploit code.
Other vulnerabilities in Zoom Video Communications Inc Keybase Client for Windows
Sources
Also known as GHSA-h72j-pmww-phww.