Buffer overflow in Onlyoffice Core
CVE-2022-29777
Onlyoffice Document Server v6.0.0 and below and Core 6.1.0.26 and below were discovered to contain a heap overflow via the component DesktopEditor/fontengine/fontconverter/FontFileBase.h.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.069 (93.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.069 · newest: 0.069 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md (Third Party Advisory, Release Notes)
- github.com/ONLYOFFICE/core/commit/b17d5e860f30e8be2caeb0022b63be4c76660178 (Patch, Third Party Advisory)
- github.com/moehw/poc_exploits/tree/master/CVE-2022-29777 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-29777?
- CVE-2022-29777 is a critical-severity vulnerability in Onlyoffice Core, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-06-02.
- How severe is CVE-2022-29777?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-29777 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.