Bug 1767920 (CVE-2019-15145)

Summary:	CVE-2019-15145 djvulibre: out-of-bounds read in JB2Dict::JB2Codec::get_direct_context in libdjvu/JB2Image.h
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	brian, manisandro, mkasik
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:	2021-10-27 10:50:32 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:	1767921, 1767922, 1767923, 1767924
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2019-11-01 16:41:51 UTC

DjVuLibre 3.5.27 allows attackers to cause a denial-of-service attack (application crash via an out-of-bounds read) by crafting a corrupted JB2 image file that is mishandled in JB2Dict::JB2Codec::get_direct_context in libdjvu/JB2Image.h because of a missing zero-bytes check in libdjvu/GBitmap.h.

Reference:
https://sourceforge.net/p/djvu/bugs/298/

Upstream commit:
https://sourceforge.net/p/djvu/djvulibre-git/ci/9658b01431cd7ff6344d7787f855179e73fe81a7/

Comment 1 Guilherme de Almeida Suckevicz 2019-11-01 16:42:12 UTC

Created djvulibre tracking bugs for this issue:

Affects: epel-6 [bug 1767923]
Affects: epel-7 [bug 1767924]
Affects: fedora-all [bug 1767921]


Created mingw-djvulibre tracking bugs for this issue:

Affects: fedora-all [bug 1767922]