Bug 1276126 (CVE-2015-5299)

Summary:	CVE-2015-5299 Samba: Missing access control check in shadow copy code
Product:	[Other] Security Response	Reporter:	Kurt Seifried <kseifried>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aavati, asn, gdeschner, jarrpa, ksiddiqu, nlevinki, rfortier, sbose, security-response-team, sgirijan, sisharma, slong, smohan, ssaha, vbellur
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	samba 4.1.22, samba 4.2.7, samba 4.3.3	Doc Type:	Bug Fix
Doc Text:	A missing access control flaw was found in Samba. A remote, authenticated attacker could use this flaw to view the current snapshot on a Samba share, despite not having DIRECTORY_LIST access rights.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-01-08 12:19:02 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:	1290706, 1290707, 1290708, 1290709, 1290710, 1290711, 1290727, 1292069
Bug Blocks:	1276127, 1281327

Description Kurt Seifried 2015-10-28 19:24:31 UTC

The Samba Project reports:

All versions of Samba from 3.2.0 to 4.3.1 inclusive are vulnerable to
a missing access control check in the vfs_shadow_copy2 module. When
looking for the shadow copy directory under the share path the current
accessing user should have DIRECTORY_LIST access rights in order to
view the current snapshots.

This was not being checked in the affected versions of Samba.

https://bugzilla.samba.org/show_bug.cgi?id=11529

Comment 1 Huzaifa S. Sidhpurwala 2015-12-10 06:25:48 UTC

Acknowledgements:

Red Hat would like to thank the Samba project for reporting this issue. Upstream acknowledges partha as the original reporter.

Comment 5 Siddharth Sharma 2015-12-16 12:08:52 UTC

Created samba tracking bugs for this issue:

Affects: fedora-all [bug 1292069]

Comment 6 Huzaifa S. Sidhpurwala 2015-12-17 04:08:30 UTC

External References:

https://www.samba.org/samba/security/CVE-2015-5299.html

Comment 7 Tomas Hoger 2015-12-17 15:24:45 UTC

Upstream commit:

https://git.samba.org/?p=samba.git;a=commitdiff;h=675fd8d771f9d43e354dba53ddd9b5483ae0a1d7

Comment 9 errata-xmlrpc 2016-01-07 17:06:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0010 https://rhn.redhat.com/errata/RHSA-2016-0010.html

Comment 10 errata-xmlrpc 2016-01-07 17:23:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0011 https://rhn.redhat.com/errata/RHSA-2016-0011.html

Comment 11 errata-xmlrpc 2016-01-08 01:39:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:0006 https://rhn.redhat.com/errata/RHSA-2016-0006.html

Comment 12 errata-xmlrpc 2016-01-08 10:18:46 UTC

This issue has been addressed in the following products:

  Red Hat Gluster Storage 3.1 for RHEL 7

Via RHSA-2016:0016 https://rhn.redhat.com/errata/RHSA-2016-0016.html

Comment 13 errata-xmlrpc 2016-01-08 10:19:25 UTC

This issue has been addressed in the following products:

  Red Hat Gluster Storage 3.1 for RHEL 6

Via RHSA-2016:0015 https://rhn.redhat.com/errata/RHSA-2016-0015.html