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Pardus: Samba: Security Bypass
Posted by Benjamin D. Thomas
by malicious users to bypass certain security restrictions and by malicious people to potentially compromise a user's system.
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Pardus Linux Security Advisory 2009-98 security@pardus.org.tr
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Date: 2009-06-30
Severity: 2
Type: Local
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Summary
======
Two vulnerabilities have been reported in Samba, which can be exploited
by malicious users to bypass certain security restrictions and by
malicious people to potentially compromise a user's system.
Description
==========
1) An uninitialised memory access error exists in smbd when denying
attempts to modify a restricted access control list (ACL). This can be
exploited to potentially modify the ACL of an already writable file
without required permissions.
2) A format string error exists in the "smbclient" utility when
processing file names received as command arguments. This can be
exploited to potentially execute arbitrary code by tricking a user into
e.g. issuing a "put" command having a malicious file name argument in
"smbclient".
Affected packages:
Pardus 2008:
samba, all before 3.2.13-42-11
Resolution
=========
There are update(s) for samba. You can update them via Package Manager
or with a single command from console:
pisi up samba
References
=========
* http://bugs.pardus.org.tr/show_bug.cgi?id128
* http://us1.samba.org/samba/ftp/patches/security/samba-3.3.5-CVE-2009-1888.patch
* http://us1.samba.org/samba/security/CVE-2009-1886.html
* http://us1.samba.org/samba/security/CVE-2009-1888.html