Bug 2039445 (CVE-2021-43579)

Summary:	CVE-2021-43579 htmldoc: stack-based buffer overflow in image_load_bmp() in htmldoc/image.cxx
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	extras-orphan, pahan, rdieter
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-01-11 18:30:45 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2039447, 2039446
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2022-01-11 17:57:24 UTC

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.

References:
https://github.com/michaelrsweet/htmldoc/issues/453
https://github.com/michaelrsweet/htmldoc/issues/456

Upstream patch:
https://github.com/michaelrsweet/htmldoc/commit/27d08989a5a567155d506ac870ae7d8cc88fa58b

Comment 1 Guilherme de Almeida Suckevicz 2022-01-11 17:57:42 UTC

Created htmldoc tracking bugs for this issue:

Affects: epel-7 [bug 2039447]
Affects: fedora-34 [bug 2039446]

Comment 2 Product Security DevOps Team 2022-01-11 18:30:43 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.