Bug 1524567 – CVE-2017-17497 tidy: Segmentation fault in the prvTidyTidyMetaCharset function

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Bug 1524567 - (CVE-2017-17497) CVE-2017-17497 tidy: Segmentation fault in the prvTidyTidyMetaCharset function

Summary:	CVE-2017-17497 tidy: Segmentation fault in the prvTidyTidyMetaCharset function

Status:	NEW

Aliases:	CVE-2017-17497

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=20171209,reported=2...
Keywords:	Security

Depends On:	1485858 1485859
Blocks:
	Show dependency tree / graph

Reported:	2017-12-11 12:05 EST by Andrej Nemec
Modified:	2017-12-11 12:06 EST (History)
CC List:	5 users (show)

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Description Andrej Nemec 2017-12-11 12:05:49 EST

In Tidy 5.7.0, the prvTidyTidyMetaCharset function in clean.c allows attackers to cause a denial of service (Segmentation Fault), because the currentNode variable in the "children of the head" processing feature is modified in the loop without validating the new value.

Upstream issue:

https://github.com/htacg/tidy-html5/issues/656

Comment 1 Andrej Nemec 2017-12-11 12:06:15 EST

Created tidy tracking bugs for this issue:

Affects: epel-7 [bug 1485858]
Affects: fedora-all [bug 1485859]

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