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: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: abokovoy, asn, gdeschner, jlayton, sbose, ssorce
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,public=20120625,reported=20120327,source=cve,cvss2=3.8/AV:A/AC:M/Au:S/C:P/I:P/A:N,fedora-all/samba=notaffected,rhel-5/samba=notaffected,rhel-5/samba3x=notaffected,rhel-6/samba=notaffected,rhel-6/samba4=notaffected
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-03-27 11:45:03 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:

Description Vincent Danen 2013-03-27 11:38:46 EDT
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 11:45:03 EDT
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 11:47:21 EDT
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 11:56:30 EDT
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 12:48:33 EDT
External References:

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