Bug 1167548 (CVE-2014-9471)

Summary:	CVE-2014-9471 coreutils: memory corruption flaw in parse_datetime()
Product:	[Other] Security Response	Reporter:	Murray McAllister <mmcallis>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	admiller, jrusnack, kdudka, kzak, ooprala, ovasik, pbrady, p, slawomir, twaugh
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-02-17 18:59:49 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:	1069657, 1167549, 1185947
Bug Blocks:	1167550

Description Murray McAllister 2014-11-25 04:51:43 UTC

A memory corruption flaw was reported in parse_datetime(). If an application using parse_datetime(), such as touch or date, accepted untrusted input, it could cause the application to crash or, potentially, execute arbitrary code.

Patch:

http://debbugs.gnu.org/cgi/bugreport.cgi?msg=11;filename=date-tz-crash.patch;att=1;bug=16872

References:
http://seclists.org/oss-sec/2014/q4/782
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16872

Comment 1 Murray McAllister 2014-11-25 04:52:46 UTC

Created coreutils tracking bugs for this issue:

Affects: fedora-all [bug 1167549]

Comment 2 Ondrej Vasik 2014-11-25 08:50:29 UTC

I believe this vulnerability was already addressed in F20+ Fedora (e.g. http://pkgs.fedoraproject.org/cgit/coreutils.git/commit/?h=f20 , https://bugzilla.redhat.com/show_bug.cgi?id=1069657 ). I consider this as a corner case - actually the issue is there since 5.3.0 , so RHEL-5+ are affected. That's the primary reason why I fixed that only in F20+. I'm going to close the F20 one as duplicate and keeping the tracking one opened. F19 was not yet fixed, if you believe this is imporant enough to issue a fix for f19, I can do that. Still, RHEL5+ are affected as I said.

Comment 3 Martin Prpič 2014-12-02 14:40:51 UTC

In coreutils 8.4 (shipped with RHEL5 and 6), this is limited to an indefinite hang and 100% CPU consumption.

The affected function in coreutils 8.4 is get_date().

Reproducers:

$ touch '--date=TZ="123"345" @1'
$ date '--date=TZ="123"345" @1'

Comment 5 Martin Prpič 2015-01-06 09:29:05 UTC

MITRE assigned CVE-2014-9471 to this issue: http://seclists.org/oss-sec/2015/q1/17

Comment 7 Vincent Danen 2015-02-17 18:59:49 UTC

Statement:

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.