Bug 1072778 (CVE-2014-2285)

Summary:	CVE-2014-2285 net-snmp: snmptrapd crash when using a trap with empty community string
Product:	[Other] Security Response	Reporter:	Huzaifa S. Sidhpurwala <huzaifas>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jkurik, jsafrane, pfrields, thozza, vkrizan
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:	2014-03-26 14:49:25 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:	1072044, 1073224, 1073225
Bug Blocks:	1070397

Description Huzaifa S. Sidhpurwala 2014-03-05 08:27:41 UTC

A remote denial-of-Service flaw was found in the way snmptrapd handled trap requests with empty community string, when the perl handler was enabled. A remote attacker could use this flaw to cause snmp to crash.

More details about the flaw is available at:
https://bugzilla.redhat.com/show_bug.cgi?id=1072044

Proposed upstream patch:
http://sourceforge.net/p/net-snmp/patches/1275/

Comment 1 Huzaifa S. Sidhpurwala 2014-03-06 04:26:17 UTC

This issue has been assigned CVE-2014-2285 via:

http://www.openwall.com/lists/oss-security/2014/03/05/9

Comment 4 Tomas Hoger 2014-03-19 22:23:26 UTC

This issue was caused by a bug in perl in the way newSVpv() handled NULL as its first argument.  The perl version shipped in Red Hat Enterprise Linux 5 crashes when newSVpv() is called with NULL argument.  The perl version shipped in Red Hat Enterprise Linux 6 handles NULL values gracefully, and hence net-snmp packages in Red Hat Enterprise Linux 6 are not affected by this problem.

References related to the perl bug and its fix:
http://www.nntp.perl.org/group/perl.perl5.porters/2006/09/msg116250.html
http://perl5.git.perl.org/perl.git/commitdiff/ddfa59c

Statement:

This issue did not affect the versions of net-snmp as shipped with Red Hat Enterprise Linux 6.

Comment 5 errata-xmlrpc 2014-03-24 17:55:08 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2014:0322 https://rhn.redhat.com/errata/RHSA-2014-0322.html