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Samba nss_info extension privilege escalation
Published: 11.09.2007
Source: BUGTRAQ
SecurityVulns ID: 8135
Type: local
Level: 5/10
Description: Gid 0 is assigned to user, if "winbind nss info" configuration parameter has value "sfu" or "rfc2307".

Affected: SAMBA : Samba 3.0
CVE: CVE-2007-4138 (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.)

Original document SAMBA, [SECURITY] Winbind's rfc2307 & SFU nss_info plugin in Samba 3.0.25[a-c] assigns users a primary gid of 0 by default (11.09.2007)

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