Bug 1876704 (CVE-2020-24996)

Summary:	CVE-2020-24996 xpdf: invalid memory access in TextString::~TextString() allows for a DoS
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	pertusus, spotrh
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:	2020-09-08 07:17:46 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:	1876705, 1876706
Bug Blocks:

Description Marian Rehak 2020-09-08 02:08:55 UTC

There is an invalid memory access in the function TextString::~TextString() located in Catalog.cc in Xpdf 4.0.2. It can be triggered by (for example) sending a crafted pdf file to the pdftohtml binary, which allows a remote attacker to cause a Denial of Service (Segmentation fault) or possibly have unspecified other impact.

Upstream Issue:

https://forum.xpdfreader.com/viewtopic.php?f=3&t=42028

Comment 1 Marian Rehak 2020-09-08 02:09:19 UTC

Created xpdf tracking bugs for this issue:

Affects: epel-all [bug 1876706]
Affects: fedora-all [bug 1876705]

Comment 2 Product Security DevOps Team 2020-09-08 07:17:46 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.