Bug 1566756 (CVE-2018-9918)

Summary:	CVE-2018-9918 qpdf: stack exhaustion in QPDFObjectHandle and QPDF_Dictionary classes in libqpdf.a
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
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:	2019-06-10 10:19:54 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:	1566757, 1566758, 1566759, 1570850
Bug Blocks:	1566760

Description Laura Pardo 2018-04-12 23:23:35 UTC

A flaw was found in QPDF through 8.0.2. libqpdf.a mishandles certain "expected dictionary key but found non-name object" cases, allowing remote attackers to cause a denial of service (stack exhaustion), related to the QPDFObjectHandle and QPDF_Dictionary classes.


References:
https://github.com/qpdf/qpdf/issues/202

Comment 1 Laura Pardo 2018-04-12 23:24:05 UTC

Created qpdf tracking bugs for this issue:

Affects: fedora-all [bug 1566757]
Affects: epel-6 [bug 1566758]

Comment 3 Zdenek Dohnal 2018-04-16 10:45:21 UTC

Upstream patch https://github.com/qpdf/qpdf/commit/b4d6cf6836ce025ba1811b7bbec52680c7204223

Comment 6 Fedora Update System 2018-04-27 04:04:30 UTC

qpdf-7.1.1-5.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.