Test ID:	1.3.6.1.4.1.25623.1.0.150730
Category:	Denial of Service
Title:	Samba >= 3.4.0 DoS Vulnerability (CVE-2013-4408)
Summary:	DCE-RPC fragment length field is incorrectly checked.
Description:	Summary: DCE-RPC fragment length field is incorrectly checked. Vulnerability Insight: Samba versions 3.4.0 and above (versions 3.4.0 - 3.4.17, 3.5.0 - 3.5.22, 3.6.0 - 3.6.21, 4.0.0 - 4.0.12 and including 4.1.2) are vulnerable to buffer overrun exploits in the client processing of DCE-RPC packets. This is due to incorrect checking of the DCE-RPC fragment length in the client code. This is a critical vulnerability as the DCE-RPC client code is part of the winbindd authentication and identity mapping daemon, which is commonly configured as part of many server installations (when joined to an Active Directory Domain). A malicious Active Directory Domain Controller or man-in-the-middle attacker impersonating an Active Directory Domain Controller could achieve root-level access by compromising the winbindd process. Samba server versions 3.4.0 - 3.4.17 and versions 3.5.0 - 3.5.22 are also vulnerable to a denial of service attack (server crash) due to a similar error in the server code of those versions. Samba server versions 3.6.0 and above (including all 3.6.x versions, all 4.0.x versions and 4.1.x) are not vulnerable to this problem. In addition range checks were missing on arguments returned from calls to the DCE-RPC functions LookupSids (lsa and samr), LookupNames (lsa and samr) and LookupRids (samr) which could also cause similar problems. As this was found during an internal audit of the Samba code there are no currently known exploits for this problem (as of December 9th 2013). Affected Software/OS: Samba versions 3.4.0 through 3.4.17, 3.5.0 through 3.5.22, 3.6.0 through 3.6.21, 4.0.0 through 4.0.12 and including 4.1.2 Solution: Update to version 3.6.22, 4.0.13, 4.1.3 or later. CVSS Score: 8.3 CVSS Vector: AV:A/AC:L/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2013-4408 64191 http://www.securityfocus.com/bid/64191 DSA-2812 http://www.debian.org/security/2013/dsa-2812 FEDORA-2014-7672 http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html FEDORA-2014-9132 http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html GLSA-201502-15 http://security.gentoo.org/glsa/glsa-201502-15.xml HPSBUX03087 http://marc.info/?l=bugtraq&m=141660010015249&w=2 MDVSA-2013:299 http://www.mandriva.com/security/advisories?name=MDVSA-2013:299 RHSA-2013:1805 http://rhn.redhat.com/errata/RHSA-2013-1805.html RHSA-2013:1806 http://rhn.redhat.com/errata/RHSA-2013-1806.html RHSA-2014:0009 http://rhn.redhat.com/errata/RHSA-2014-0009.html SSRT101413 SUSE-SU-2014:0024 http://lists.opensuse.org/opensuse-security-announce/2014-01/msg00002.html USN-2054-1 http://www.ubuntu.com/usn/USN-2054-1 http://www.samba.org/samba/ftp/patches/security/samba-4.1.2-CVE-2013-4408-CVE-2012-6150.patch http://www.samba.org/samba/security/CVE-2013-4408 openSUSE-SU-2013:1921 http://lists.opensuse.org/opensuse-updates/2013-12/msg00088.html openSUSE-SU-2014:0405 http://lists.opensuse.org/opensuse-updates/2014-03/msg00063.html openSUSE-SU-2016:1106 http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html openSUSE-SU-2016:1107 http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html
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