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Test ID:1.3.6.1.4.1.25623.1.0.100488
Category:Remote file access
Title:Samba Symlink Directory Traversal Vulnerability
Summary:Samba is prone to a directory-traversal vulnerability because the; application fails to sufficiently sanitize user-supplied input.
Description:Summary:
Samba is prone to a directory-traversal vulnerability because the
application fails to sufficiently sanitize user-supplied input.

Vulnerability Insight:
To exploit this issue, attackers require authenticated access to a
writable share. Note that this issue may be exploited through a writable share accessible by guest accounts.

Vulnerability Impact:
Exploits would allow an attacker to access files outside of the Samba
user's root directory to obtain sensitive information and perform other attacks.

Affected Software/OS:
Samba versions before 3.3.11, 3.4.x before 3.4.6, and 3.5.x before 3.5.0rc3.

Solution:
The vendor commented on the issue stating that it stems from an
insecure default configuration. The Samba team advises administrators to set 'wide links = no' in
the '[global]' section of 'smb.conf' and then restart the service to correct misconfigured services.

Please see the references for more information.

CVSS Score:
3.5

CVSS Vector:
AV:N/AC:M/Au:S/C:P/I:N/A:N

Cross-Ref: BugTraq ID: 38111
Common Vulnerability Exposure (CVE) ID: CVE-2010-0926
http://archives.neohapsis.com/archives/fulldisclosure/2010-02/0107.html
http://archives.neohapsis.com/archives/fulldisclosure/2010-02/0108.html
http://archives.neohapsis.com/archives/fulldisclosure/2010-02/0083.html
http://marc.info/?l=full-disclosure&m=126538598820903&w=2
http://blog.metasploit.com/2010/02/exploiting-samba-symlink-traversal.html
http://marc.info/?l=oss-security&m=126540402215620&w=2
http://marc.info/?l=oss-security&m=126540733320471&w=2
http://marc.info/?l=oss-security&m=126539592603079&w=2
http://marc.info/?l=oss-security&m=126545363428745&w=2
http://www.openwall.com/lists/oss-security/2010/02/06/3
http://marc.info/?l=oss-security&m=126777580624790&w=2
http://www.openwall.com/lists/oss-security/2010/03/05/3
http://marc.info/?l=samba-technical&m=126539387432412&w=2
http://marc.info/?l=samba-technical&m=126540100511357&w=2
http://marc.info/?l=samba-technical&m=126540248613395&w=2
http://marc.info/?l=samba-technical&m=126540277713815&w=2
http://marc.info/?l=samba-technical&m=126540290614053&w=2
http://marc.info/?l=samba-technical&m=126540376915283&w=2
http://marc.info/?l=samba-technical&m=126540475116511&w=2
http://marc.info/?l=samba-technical&m=126540477016522&w=2
http://marc.info/?l=samba-technical&m=126540539117328&w=2
http://marc.info/?l=samba-technical&m=126540608318301&w=2
http://marc.info/?l=samba-technical&m=126540695819735&w=2
http://marc.info/?l=samba-technical&m=126540011609753&w=2
http://marc.info/?l=samba-technical&m=126547903723628&w=2
http://marc.info/?l=samba-technical&m=126548356728379&w=2
http://marc.info/?l=samba-technical&m=126549111204428&w=2
http://marc.info/?l=samba-technical&m=126555346721629&w=2
http://secunia.com/advisories/39317
SuSE Security Announcement: SUSE-SR:2010:008 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2010-04/msg00001.html
SuSE Security Announcement: SUSE-SR:2010:014 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html
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