Bug 1545272 (CVE-2017-18183)

Summary:	CVE-2017-18183 qpdf: Infinite Loop in QPDFWriter::enqueueObject in libqpdf/QPDFWriter.cc
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:	qpdf 7.1.1	Doc Type:	If docs needed, set a value
Doc Text:	An unbounded recursion flaw leading to stack exhaustion was found in the way QPDF parsed PDF files. An attacker could potentially use this flaw to crash QPDF by tricking it into processing crafted QPDF files.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:39:59 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:	1554691, 1554704
Bug Blocks:	1545293

Description Laura Pardo 2018-02-14 14:14:26 UTC

A flaw was discovered in QPDF before 7.0.0. There is an infinite recursion loop in the QPDFWriter::enqueueObject() function in libqpdf/QPDFWriter.cc. This allows an attacker to cause a denial of service via a crafted file.


External References:

https://github.com/qpdf/qpdf/issues/143

Upstream Patch:

https://github.com/qpdf/qpdf/commit/8249a26d69f72b9