Bug 1594090 – CVE-2018-13346 mercurial: Missing check for fragment start position in mpatch.c:mpatch_apply()

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Bug 1594090 - (CVE-2018-13346) CVE-2018-13346 mercurial: Missing check for fragment start position in mpatch.c:mpatch_apply()

Summary:	CVE-2018-13346 mercurial: Missing check for fragment start position in mpatch...

Status:	NEW

Aliases:	CVE-2018-13346

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=20180606,reported=2...
Keywords:	Security

Depends On:	1594088 1594089 1613129
Blocks:	1594086
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Reported:	2018-06-22 00:49 EDT by Sam Fowler
Modified:	2018-09-30 18:13 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:	mercurial 4.6.1
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Description Sam Fowler 2018-06-22 00:49:21 EDT

Mercurial before version 4.6.1 has a missing check for fragment start position in mpatch.c:mpatch_apply()

Upstream Changelog:

https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.6.1_.282018-06-06.29


Upstream Patch:

https://www.mercurial-scm.org/repo/hg/rev/faa924469635

Comment 1 Doran Moppert 2018-07-27 00:52:14 EDT

This is related to CVE-2018-13347: this issue is reading past the end of input where the other writes before the output buffer.  In mercurial 2.6.2, it is present in the apply() function.

Comment 2 Doran Moppert 2018-08-07 01:08:19 EDT

Created mercurial tracking bugs for this issue:

Affects: fedora-all [bug 1594088]

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