Bug 804093 (CVE-2012-1182)

Summary:	CVE-2012-1182 samba: Multiple heap-based buffer overflows in memory management based on NDR marshalling code output
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	unspecified	CC:	asn, bressers, gdeschner, gwync, htaira, jrusnack, mbarnes, mcrha, nsoman, rmainz, sbose, security-response-team, ssorce, steved
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	samba 3.4.16, samba 3.5.14, samba 3.6.4	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-01-26 22:31:13 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:	804637, 804638, 804639, 804641, 804642, 804644, 804646, 804647, 804650, 804652, 804655, 811392, 812010, 812257, 855232, 865987
Bug Blocks:	804113, 855229

Description Jan Lieskovsky 2012-03-16 14:12:07 UTC

Multiple heap-based buffer overflow flaws were found in the way the code generated by Perl-based DCE/RPC IDL (PIDL) compiler of the Samba suite performed array memory allocation. Memory for an array having an is_size() attribute has been allocated based on the array length, which was provided by the Network Data Representation (NDR) marshalling code (converting parameters provided to the RPC call by the client to the NDR). On the other hand the loop retrieving array elements for a particular array used variable indicated by the size_is() attribute. A remote attacker could provide a specially-crafted remote procedure call (RPC) parameters, which once processed by the marshalling code of the Samba server would lead to Samba daemon (smbd) crash, or, potentially arbitrary code execution with the privileges of the user running the server.

Comment 22 Vincent Danen 2012-04-10 16:44:20 UTC

This has been corrected in upstream 3.6.4, 3.5.14, and 3.4.16.

External References:

http://www.samba.org/samba/history/samba-3.6.4.html

Comment 23 errata-xmlrpc 2012-04-10 20:22:59 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.6 EUS - Server Only
  Red Hat Enterprise Linux 5

Via RHSA-2012:0466 https://rhn.redhat.com/errata/RHSA-2012-0466.html

Comment 24 errata-xmlrpc 2012-04-10 21:13:14 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.3 Long Life
  Red Hat Enterprise Linux 5.6 EUS - Server Only
  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6.0 EUS - Server Only
  Red Hat Enterprise Linux 6.1 EUS - Server Only
  Red Hat Enterprise Linux 6

Via RHSA-2012:0465 https://rhn.redhat.com/errata/RHSA-2012-0465.html

Comment 25 Vincent Danen 2012-04-10 21:35:49 UTC

Created samba tracking bugs for this issue

Affects: fedora-all [bug 811392]

Comment 29 Gwyn Ciesla 2012-04-12 14:56:29 UTC

Rawhide has been updated, updates have been created for f17, f16 and f15.

Comment 30 Huzaifa S. Sidhpurwala 2012-04-13 08:50:14 UTC

Created samba4 tracking bugs for this issue

Affects: fedora-all [bug 812257]

Comment 31 errata-xmlrpc 2012-04-13 13:54:40 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 4 Extended Lifecycle Support

Via RHSA-2012:0478 https://rhn.redhat.com/errata/RHSA-2012-0478.html

Comment 34 Fedora Update System 2012-05-15 23:28:25 UTC

samba4-4.0.0-38.alpha16.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 37 Huzaifa S. Sidhpurwala 2012-09-12 10:28:33 UTC

This flaw exists in the samba PIDL code, and therefore affects the PIDL compiler shipped within the samba4 package (samba4-pidl). However we do not ship any daemon with the samba4 package, hence the impact of this flaw on samba4 is very limited.

The samba4-pidl compiler is also used to compile code in the openchange and evolution-mapi packages. These contain client side code for exchanging data with MAPI servers. In order to successfully exploit vulnerabilities in these packages, arising out of the above flaw in samba4-pidl, one will need to MITM the connection between these clients and the MAPI servers. Hence the impact on these packages is limited as well.

Comment 40 errata-xmlrpc 2013-02-21 08:45:59 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0506 https://rhn.redhat.com/errata/RHSA-2013-0506.html

Comment 41 errata-xmlrpc 2013-02-21 10:20:42 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0515 https://rhn.redhat.com/errata/RHSA-2013-0515.html