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Last updated: 9/23/2014 6:25:28 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2007-4138

Original release date: 09/13/2007
Last revised: 03/07/2011
Source: US-CERT/NIST

Overview

The Winbind nss_info extension (nsswitch/idmap_ad.c) in idmap_ad.so in Samba 3.0.25 through 3.0.25c, when the "winbind nss info" option is set to rfc2307 or sfu, grants all local users the privileges of gid 0 when the (1) RFC2307 or (2) Services for UNIX (SFU) primary group attribute is not defined.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 6.9 (MEDIUM) (AV:L/AC:M/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/18/2007)
Not vulnerable. These issues did not affect the versions of Samba as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.

References to Advisories, Solutions, and Tools

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External Source: BUGTRAQ
Name: 20070911 [SECURITY] Winbind's rfc2307 & SFU nss_info plugin in Samba 3.0.25[a-c] assigns users a primary gid of 0 by default
US-CERT Vulnerability Note: CERT
Name: TA07-352A
External Source: VUPEN
Name: ADV-2007-3120
External Source: OVAL
Name: oval:org.mitre.oval:def:10375
External Source: SECTRACK
Name: 1018681
External Source: CONFIRM
Name: http://docs.info.apple.com/article.html?artnum=307179
External Source: XF
Name: samba-smb-privilege-escalation(36560)
External Source: FEDORA
Name: FEDORA-2007-2145
External Source: CONFIRM
Name: http://www.samba.org/samba/security/CVE-2007-4138.html
External Source: REDHAT
Name: RHSA-2007:1017
External Source: REDHAT
Name: RHSA-2007:1016
External Source: SECUNIA
Name: 26776
External Source: SREASON
Name: 3135
External Source: SLACKWARE
Name: SSA:2007-255-02
External Source: SECUNIA
Name: 26834
External Source: SECUNIA
Name: 26764
Type: Advisory; Patch Information
External Source: BID
Name: 25636
Type: Patch Information
External Source: CONFIRM
Name: https://issues.rpath.com/browse/RPL-1705
External Source: SECUNIA
Name: 26795

References to Check Content

Identifier: oval:org.mitre.oval:def:10375
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)