Vulnerability Description
In Deark before v1.5.8, a specially crafted input file can cause a division by zero in (src/fmtutil.c) because of the value of pixelsize.
CVSS Score
5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Entropymine | Deark | < 1.5.8 |
Related Weaknesses (CWE)
References
- https://fatihhcelik.github.io/posts/Division-By-Zero-Deark/PatchThird Party Advisory
- https://github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28856
- https://github.com/jsummers/deark/commit/62acb7753b0e3c0d3ab3c15057b0a6522231333PatchThird Party Advisory
- https://fatihhcelik.github.io/posts/Division-By-Zero-Deark/PatchThird Party Advisory
- https://github.com/jsummers/deark/commit/62acb7753b0e3c0d3ab3c15057b0a6522231333PatchThird Party Advisory
FAQ
What is CVE-2021-28856?
CVE-2021-28856 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In Deark before v1.5.8, a specially crafted input file can cause a division by zero in (src/fmtutil.c) because of the value of pixelsize.
How severe is CVE-2021-28856?
CVE-2021-28856 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-2021-28856?
Check the references section above for vendor advisories and patch information. Affected products include: Entropymine Deark.