CVE-2021-43579

HIGH
Published Jan 10, 20224y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Jan 10, 2022 4y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 2

VendorProductVersionRange
htmldoc_projecthtmldoc* ≤1.9.13
debiandebian_linux9.0any

References 5

  • github.com https://github.com/michaelrsweet/htmldoc/commit/27d08989a5a567155d506ac870ae7d8cc88fa58b
    PatchThird Party Advisory
  • github.com https://github.com/michaelrsweet/htmldoc/compare/v1.9.12...v1.9.13
    Release NotesThird Party Advisory
  • github.com https://github.com/michaelrsweet/htmldoc/issues/453
    ExploitIssue TrackingPatchThird Party Advisory
  • github.com https://github.com/michaelrsweet/htmldoc/issues/456
    ExploitIssue TrackingPatchThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2022/02/msg00022.html
    Mailing ListThird Party Advisory

Remediation

  • github.com https://github.com/michaelrsweet/htmldoc/commit/27d08989a5a567155d506ac870ae7d8cc88fa58b
    PatchThird Party Advisory
  • github.com https://github.com/michaelrsweet/htmldoc/issues/453
    ExploitIssue TrackingPatchThird Party Advisory
  • github.com https://github.com/michaelrsweet/htmldoc/issues/456
    ExploitIssue TrackingPatchThird Party Advisory