Bug 928419 (CVE-2013-0454)

Summary:	CVE-2013-0454 samba: the SMB2 server does not release unused shares
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abokovoy, asn, gdeschner, jlayton, sbose, ssorce
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:	2013-03-27 15:45:03 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:

Description Vincent Danen 2013-03-27 15:38:46 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2013-0454 to
the following vulnerability:

Name: CVE-2013-0454
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0454
Assigned: 20121216
Reference: https://lists.samba.org/archive/samba-announce/2012/000259.html
Reference: https://bugzilla.samba.org/show_bug.cgi?id=8738
Reference: http://www.ibm.com/support/docview.wss?uid=ssg1S1004289
Reference: http://xforce.iss.net/xforce/xfdb/80970

Samba before 3.6.6, as used on the IBM Storwize V7000 Unified 1.3 before
1.3.2.3 and 1.4 before 1.4.0.1 and possibly other products, does not
properly enforce CIFS share attributes, which allows remote authenticated
users to (1) write to a read-only share; (2) triggerdata-integrity problems
related to the oplock, locking, coherency, or leases attribute; or (3) have
an unspecified impact by leveraging incorrect handling of the browseable or
"hide unreadable" parameter.

Comment 1 Vincent Danen 2013-03-27 15:45:03 UTC

Statement:

Not vulnerable.  This issue did not affect the versions of samba as shipped with Red Hat Enterprise Linux 5 as they did not provide support for SMB2.  This issue did not affect the versions of samba3x and samba as shipped with Red Hat Enterprise Linux 6 as they ship newer versions that do not include the vulnerable code.

Comment 2 Vincent Danen 2013-03-27 15:47:21 UTC

To clarify, the SMB2 support was added in 3.6.0:

http://wiki.samba.org/index.php/Samba_3.6_Features_added/changed#SMB2_support

So only versions 3.6.0 through 3.6.5 (fixed in upstream 3.6.6) were affected by this issue.

Comment 3 Vincent Danen 2013-03-27 15:56:30 UTC

This did not ever affect samba3x in Red Hat Enterprise Linux 5 as 5.8 provided 3.5.10 and it was updated to 3.6.6 via RHBA-2013:0064.

Likewise this did not ever affect samba in Red Hat Enterprise Linux 6 as 6.3 provided 3.5.10 and it was updated to 3.6.9 via RHBA-2013:0338.

Comment 4 Vincent Danen 2013-03-27 16:48:33 UTC

External References:

https://www.samba.org/samba/security/CVE-2013-0454