Privilege escalation in Collaboraoffice Online
CVE-2021-25630
"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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Collaboraoffice Online
- Collabora Productivity Online — versions Collabora Online 4.2, Collabora Online 6.4
- The Document Foundation Libreoffice Online — versions unspecified
Weakness classification (CWE)
References
- github.com/CollaboraOnline/online/security/advisories/GHSA-49w3-gr3w-m68v (Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/01/18/3 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-25630?
- CVE-2021-25630 is a high-severity vulnerability in Collaboraoffice Online, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2021-02-23.
- How severe is CVE-2021-25630?
- High severity. CVSS v3 base score is 7.8 out of 10.