Bug 1594090 (CVE-2018-13346)

Summary:	CVE-2018-13346 mercurial: Missing check for fragment start position in mpatch.c:mpatch_apply()
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jlaska, katzj, mads, ndbecker2, pcahyna
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mercurial 4.6.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-08-06 19:19:06 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:	1594088, 1594089, 1613129
Bug Blocks:	1594086

Description Sam Fowler 2018-06-22 04:49:21 UTC

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 04:52:14 UTC

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 05:08:19 UTC

Created mercurial tracking bugs for this issue:

Affects: fedora-all [bug 1594088]

Comment 4 errata-xmlrpc 2019-08-06 12:34:51 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2276 https://access.redhat.com/errata/RHSA-2019:2276

Comment 5 Product Security DevOps Team 2019-08-06 19:19:06 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-13346