CVE-2021-25630 Privilege escalation in Collabora Online
A local attacker can exploit a flawed user check in the privileged loolforkit program to gain root privileges on systems running Collabora Online or LibreOffice Online.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-25630?
CVE-2021-25630 is a high-severity vulnerability in Collabora Online, published on 23 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
"loolforkit" is a privileged program that is supposed to be run by a special, non-privileged "lool" user. Before doing anything else "loolforkit" checks, if it was invoked by the "lool" user, and refuses to run with privileges, if it's not the case. In the vulnerable version of "loolforkit" this check was wrong, so a normal user could start "loolforkit" and eventually get local root privileges.
Weakness: CWE-269
Which versions are affected by CVE-2021-25630?
It affects 1 product.
Products include Collaboraoffice Online.
How do I fix CVE-2021-25630?
No fix has been published for CVE-2021-25630 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-25630 being exploited?
There is no known exploitation of CVE-2021-25630 in the wild and no public exploit code.
Sources
Also known as GHSA-49w3-gr3w-m68v.