Bug 1485847 – CVE-2017-12595 qpdf: Stack overflow when processing deeply nested arrays and dictionaries

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Bug 1485847 - (CVE-2017-12595) CVE-2017-12595 qpdf: Stack overflow when processing deeply nested arrays and dictionaries

Summary:	CVE-2017-12595 qpdf: Stack overflow when processing deeply nested arrays and ...

Status:	NEW

Aliases:	CVE-2017-12595

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=20170822,reported=2...
Keywords:	Security

Depends On:	1485849 1485850
Blocks:
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Reported:	2017-08-28 05:07 EDT by Adam Mariš
Modified:	2017-08-28 05:08 EDT (History)
CC List:	3 users (show)

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Description Adam Mariš 2017-08-28 05:07:36 EDT

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 05:08:55 EDT

Created qpdf tracking bugs for this issue:

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

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