Bug 1699862 (CVE-2019-11026)

Summary:	CVE-2019-11026 poppler: infinite recursion in function FontInfoScanner::scanFonts in FontInfo.cc
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	caillon+fedoraproject, feborges, gnome-sig, john.j5live, mclasen, mkasik, rdieter, rhughes, rstrode, sandmann
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:	2019-04-18 06:01:02 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:	1699863
Bug Blocks:	1699865

Description Dhananjay Arunesh 2019-04-15 12:04:31 UTC

FontInfoScanner::scanFonts in FontInfo.cc in Poppler 0.75.0 has infinite recursion, leading to a call to the error function in Error.cc.

Reference:
https://research.loginsoft.com/vulnerability/stack-based-buffer-overflow-in-error-poppler-0-75-0/
https://gitlab.freedesktop.org/poppler/poppler/issues/752

Comment 1 Dhananjay Arunesh 2019-04-15 12:04:48 UTC

Created poppler tracking bugs for this issue:

Affects: fedora-all [bug 1699863]

Comment 2 Huzaifa S. Sidhpurwala 2019-04-18 06:01:02 UTC

Upstream patch: https://gitlab.freedesktop.org/aacid/poppler/commit/8051f678b3b43326e5fdfd7c03f39de21059f426

This is really a stack-overflow due to infinite loop and not really a stack-based overflow as suggested by the researcher. Also based on the attack vector this is really a borderline security flaw.