CVE-2021-43579
HIGHCVSS 7.8/10EPSS 7.35%
Last modified
CVE-2021-43579 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A stack-based buffer overflow in image_load_bmp() in HTMLDOC <= 1.9.13 results in remote code execution if the victim converts an HTML document linking to a crafted BMP file.. EPSS estimates a 7.35% chance of exploitation in the next 30 days.
Description
A stack-based buffer overflow in image_load_bmp() in HTMLDOC <= 1.9.13 results in remote code execution if the victim converts an HTML document linking to a crafted BMP file.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Htmldoc Project | Htmldoc | <= 1.9.13 |
| Debian | Debian Linux | 9.0 |
References
- https://github.com/michaelrsweet/htmldoc/commit/27d08989a5a567155d506ac870ae7d8cc88fa58bPatch, Third Party Advisory
- https://github.com/michaelrsweet/htmldoc/compare/v1.9.12...v1.9.13Release Notes, Third Party Advisory
- https://github.com/michaelrsweet/htmldoc/issues/453Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/michaelrsweet/htmldoc/issues/456Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/02/msg00022.htmlMailing List, Third Party Advisory
- https://github.com/michaelrsweet/htmldoc/commit/27d08989a5a567155d506ac870ae7d8cc88fa58bPatch, Third Party Advisory
- https://github.com/michaelrsweet/htmldoc/compare/v1.9.12...v1.9.13Release Notes, Third Party Advisory
- https://github.com/michaelrsweet/htmldoc/issues/453Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/michaelrsweet/htmldoc/issues/456Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/02/msg00022.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-43579?
A stack-based buffer overflow in image_load_bmp() in HTMLDOC <= 1.9.13 results in remote code execution if the victim converts an HTML document linking to a crafted BMP file.
How severe is CVE-2021-43579?
CVE-2021-43579 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 7.35% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43579?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-43579?
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Scan your code nowSource: NVD / NIST