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.

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

EPSS: 0.013 (68.2th percentile) — read the EPSS interpretation.

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.

Affected products

Artifex Mupdf
Fedoraproject Fedora — versions 34
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Exploit, x_refsource_MISC, Vendor Advisory)
cve@mitre.org (x_refsource_MISC)
cve@mitre.org (x_refsource_FEDORA, 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.