Buffer overflow in Artifex Mupdf
CVE-2021-37220
MuPDF through 1.18.1 has an out-of-bounds write because the cached color converter does not properly consider the maximum key size of a hash table. This can, for example, be seen with crafted "mutool draw" input.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (70.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Artifex Mupdf
- Fedoraproject Fedora — versions 34
Weakness classification (CWE)
References
- bugs.ghostscript.com/show_bug.cgi (Exploit, Vendor Advisory)
- git.ghostscript.com/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2021-37220?
- CVE-2021-37220 is a medium-severity vulnerability in Artifex Mupdf, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2021-07-21.
- How severe is CVE-2021-37220?
- Medium severity. CVSS v3 base score is 5.5 out of 10.