Bug 1485847 (CVE-2017-12595)

Summary:	CVE-2017-12595 qpdf: Stack overflow when processing deeply nested arrays and dictionaries
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jpopelka, twaugh, zdohnal
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:	2019-06-08 03:22:18 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:	1485849, 1485850
Bug Blocks:

Description Adam Mariš 2017-08-28 09:07:36 UTC

The tokenizer in QPDF 6.0.0 and 7.0.b1 is recursive for arrays and
dictionaries, which allows remote attackers to cause a denial of
service (stack consumption and segmentation fault) or possibly have
unspecified other impact via a PDF document with a deep data structure,
as demonstrated by a crash in QPDFObjectHandle::parseInternal in
libqpdf/QPDFObjectHandle.cc.

Upstream bug:

https://github.com/qpdf/qpdf/issues/146

Upstream patch:

https://github.com/qpdf/qpdf/commit/ad527a64f93dca12f6aabab2ca99ae5eb352ab4b

Comment 1 Adam Mariš 2017-08-28 09:08:55 UTC

Created qpdf tracking bugs for this issue:

Affects: epel-6 [bug 1485850]
Affects: fedora-all [bug 1485849]