Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Artifex | Mupdf | <= 1.18.1 |
| Fedoraproject | Fedora | 34 |
Related Weaknesses (CWE)
References
- http://git.ghostscript.com/?p=mupdf.git%3Bh=f5712c9949d026e4b891b25837edd2edc166
- https://bugs.ghostscript.com/show_bug.cgi?id=703791ExploitVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- http://git.ghostscript.com/?p=mupdf.git%3Bh=f5712c9949d026e4b891b25837edd2edc166
- https://bugs.ghostscript.com/show_bug.cgi?id=703791ExploitVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2021-37220?
CVE-2021-37220 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 ...
How severe is CVE-2021-37220?
CVE-2021-37220 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-37220?
Check the references section above for vendor advisories and patch information. Affected products include: Artifex Mupdf, Fedoraproject Fedora.