CVE-2021-34422 Path traversal of file names in Keybase Client for Windows
A path traversal flaw in Keybase Client for Windows allows attackers to execute arbitrary code via crafted filenames in shared folders.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34422?
CVE-2021-34422 is a high-severity path traversal vulnerability in Zoom Video Communications Inc Keybase Client for Windows, published on 11 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the name of a file uploaded to a team folder. A malicious user could upload a file to a shared folder with a specially crafted file name which could allow a user to execute an application which was not intended on their host machine. If a malicious user leveraged this issue with the public folder sharing feature of the Keybase client, this could lead to remote code execution.
Weakness: CWE-22
Which versions are affected by CVE-2021-34422?
It affects 1 product.
Products include Keybase Keybase.
How do I fix CVE-2021-34422?
No fix has been published for CVE-2021-34422 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-34422 being exploited?
There is no known exploitation of CVE-2021-34422 in the wild and no public exploit code.
Other vulnerabilities in Zoom Video Communications Inc Keybase Client for Windows
Sources
Also known as GHSA-rr44-rmpx-9h3q.