Bug 1223813 – CVE-2015-4041 coreutils: heap buffer overflow in sort(1) keycompare_mb()

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Bug 1223813 - (CVE-2015-4041) CVE-2015-4041 coreutils: heap buffer overflow in sort(1) keycompare_mb()

Summary:	CVE-2015-4041 coreutils: heap buffer overflow in sort(1) keycompare_mb()

Status:	CLOSED WONTFIX

Aliases:	CVE-2015-4041

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

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:	https://engineering.redhat.com/rt/Tic...
Whiteboard:	impact=low,public=20150427,reported=2...
Keywords:	Security

Depends On:	1223821
Blocks:	1223819
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Reported:	2015-05-21 09:25 EDT by Vasyl Kaigorodov
Modified:	2015-07-01 03:52 EDT (History)
CC List:	10 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2015-06-30 09:48:56 EDT
Type:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Description Vasyl Kaigorodov 2015-05-21 09:25:45 EDT

It was reported that a heap overflow can be triggered in sort(1).
This appears to be caused by performing a size calculation without properly considering the number of bytes occupied by multibyte characters.

Initial report: https://bugzilla.suse.com/show_bug.cgi?id=928749
Fix: https://github.com/pixelb/coreutils/commit/bea5e36cc876ed627bb5e0eca36fdfaa6465e940
CVE assignment: http://seclists.org/oss-sec/2015/q2/502

Comment 1 Vasyl Kaigorodov 2015-05-21 09:35:25 EDT

Created coreutils tracking bugs for this issue:

Affects: fedora-all [bug 1223821]

Comment 2 Ondrej Vasik 2015-05-22 04:02:59 EDT

I believe heap buffer overflow affects only older versions of sort i18n patch (IOW only one of CVEs is valid for current Fedora patch, another one is valid only for RHEL 6 and older). LC_ALL=C sort code path is completely unaffected. Do you plan to create RHEL 6/7 bz for this CVE? Actually I think this (and previous similar flaws in i18n patch that got CVE as well) was the primary reason why P.Brady contacted secalert about this issue.

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