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Red Hat Enterprise Linux 6 RHSA-2013:1805-01 Critical Samba Heap Overflow

red hat
Calendar Grey December 9, 2013
Dist Redhat Esm H88
Crucial samba4 patch for Red Hat Enterprise Linux resolves severe heap overflow vulnerability. Immediate update advised.
Updated samba4 packages that fix one security issue are now available for Red Hat Enterprise Linux 6

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258

Summary

Samba is an open-source implementation of the Server Message Block (SMB) or Common Internet File System (CIFS) protocol, which allows PC-compatible machines to share files, printers, and other information.
A heap-based buffer overflow flaw was found in the DCE-RPC client code in Samba. A specially crafted DCE-RPC packet could cause various Samba programs to crash or, possibly, execute arbitrary code when parsed. A malicious or compromised Active Directory Domain Controller could use this flaw to compromise the winbindd daemon running with root privileges. (CVE-2013-4408)
Red Hat would like to thank the Samba project for reporting this issue. Upstream acknowledges Stefan Metzmacher and Michael Adam of SerNet as the original reporters of this issue.
All users of Samba are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing this update, the smb service will be restarted automatically.

Topics%20covered

Topics Covered

security advisory security update Red Hat samba important heap overflow samba patch

References

https://access.redhat.com/security/cve/CVE-2013-4408 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: samba4-4.0.0-60.el6_5.rc4.i686.rpm samba4-client-4.0.0-60.el6_5.rc4.i686.rpm samba4-common-4.0.0-60.el6_5.rc4.i686.rpm samba4-dc-4.0.0-60.el6_5.rc4.i686.rpm samba4-dc-libs-4.0.0-60.el6_5.rc4.i686.rpm samba4-debuginfo-4.0.0-60.el6_5.rc4.i686.rpm samba4-devel-4.0.0-60.el6_5.rc4.i686.rpm samba4-libs-4.0.0-60.el6_5.rc4.i686.rpm samba4-pidl-4.0.0-60.el6_5.rc4.i686.rpm samba4-python-4.0.0-60.el6_5.rc4.i686.rpm samba4-swat-4.0.0-60.el6_5.rc4.i686.rpm samba4-test-4.0.0-60.el6_5.rc4.i686.rpm samba4-winbind-4.0.0-60.el6_5.rc4.i686.rpm samba4-winbind-clients-4.0.0-60.el6_5.rc4.i686.rpm samba4-winbind-krb5-locator-4.0.0-60.el6_5.rc4.i686.rpm
x86_64: samba4-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-client-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-common-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-dc-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-dc-libs-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-debuginfo-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-devel-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-libs-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-pidl-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-python-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-swat-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-test-4.0.0-60.el6_5.rc4.x86_64.rpm samba4-winbind-4.0.0-60.el6_5.rc4.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2013:1805-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:1805.html
Issue date: 2013-12-09

Topic

Updated samba4 packages that fix one security issue are now available forRed Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.

Topics%20covered

Topics Covered

security advisory security update Red Hat samba important heap overflow samba patch

Relevant Releases Architectures

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

1018032 - CVE-2013-4408 samba: Heap-based buffer overflow due to incorrect DCE-RPC fragment length field check

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