Samba Winbind SFU/RFC2307 GID Error Lets Local Users Gain Elevated Privileges
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SecurityTracker Alert ID: 1018681 |
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SecurityTracker URL: http://securitytracker.com/id/1018681
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CVE Reference:
CVE-2007-4138
(Links to External Site)
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Date: Sep 11 2007
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Impact:
Root access via local system, User access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 3.0.25 - 3.0.25c
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Description:
A vulnerability was reported in Samba. A local user can obtain elevated privileges on the target system in a certain configuration.
When the 'winbind nss info' parameter in 'smb.conf' is set to 'sfu' or 'rfc2307' (allowing the 'idmap_ad.so' library to retrieve certain user data from an Active Directory domain controller), the user's primary group ID (gid) is set to 0 in certain cases. If the RFC2307 or Services or Unix (SFU) primary group attributes are not specified, this error will occur.
The vendor was notified on August 29, 2007.
Rick King reported this vulnerability.
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Impact:
A local user may be assigned elevated group id (gid) privileges on the target system.
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Solution:
The vendor has issued a fixed version (3.0.26). A patch is also available at:
http://www.samba.org/samba/security/
The Samba advisory is available at:
http://samba.org/samba/security/CVE-2007-4138.html
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Vendor URL: samba.org/samba/security/CVE-2007-4138.html (Links to External Site)
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Cause:
Access control error
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Underlying OS: Linux (Any), UNIX (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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