Bug 1566756 – CVE-2018-9918 qpdf: stack exhaustion in QPDFObjectHandle and QPDF_Dictionary classes in libqpdf.a

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Bug 1566756 - (CVE-2018-9918) CVE-2018-9918 qpdf: stack exhaustion in QPDFObjectHandle and QPDF_Dictionary classes in libqpdf.a

Summary:	CVE-2018-9918 qpdf: stack exhaustion in QPDFObjectHandle and QPDF_Dictionary ...

Status:	NEW

Aliases:	CVE-2018-9918

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=low,public=20180410,reported=2...
Keywords:	Security

Depends On:	1566759 1570850 1566757 1566758
Blocks:	1566760
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Reported:	2018-04-12 19:23 EDT by Laura Pardo
Modified:	2018-04-27 00:04 EDT (History)
CC List:	3 users (show)

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Description Laura Pardo 2018-04-12 19:23:35 EDT

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 19:24:05 EDT

Created qpdf tracking bugs for this issue:

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

Comment 3 Zdenek Dohnal 2018-04-16 06:45:21 EDT

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

Comment 6 Fedora Update System 2018-04-27 00:04:30 EDT

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.

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