Vulnerability Description
WriteOnePNGImage() from coders/png.c (the PNG coder) has a for loop with an improper exit condition that can allow an out-of-bounds READ via heap-buffer-overflow. This occurs because it is possible for the colormap to have less than 256 valid values but the loop condition will loop 256 times, attempting to pass invalid colormap data to the event logger. The patch replaces the hardcoded 256 value with a call to MagickMin() to ensure the proper value is used. This could impact application availability when a specially crafted input file is processed by ImageMagick. This flaw affects ImageMagick versions prior to 7.0.8-68.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Imagemagick | Imagemagick | < 6.9.10-68 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1891928ExploitIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2021/01/msg00010.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1891928ExploitIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2021/01/msg00010.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
FAQ
What is CVE-2020-25674?
CVE-2020-25674 is a vulnerability with a CVSS score of 5.5 (MEDIUM). WriteOnePNGImage() from coders/png.c (the PNG coder) has a for loop with an improper exit condition that can allow an out-of-bounds READ via heap-buffer-overflow. This occurs because it is possible fo...
How severe is CVE-2020-25674?
CVE-2020-25674 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-2020-25674?
Check the references section above for vendor advisories and patch information. Affected products include: Imagemagick Imagemagick, Debian Debian Linux.