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Samba "receive_smb_raw()" Buffer Overflow Vulnerability
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Secunia Advisory:
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SA30228
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Release Date:
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2008-05-28
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Last Update:
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2008-05-29
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Popularity:
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8,862 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Samba 2.x
Samba 3.x
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Binary Analysis:
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BA473 :: Available for 1 Credit 
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| CVE reference: | CVE-2008-1105
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Description:
Secunia Research has discovered a vulnerability in Samba, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to a boundary error within the "receive_smb_raw()" function in lib/util_sock.c when parsing SMB packets. This can be exploited to cause a heap-based buffer overflow via an overly large SMB packet received in a client context.
Successful exploitation allows execution of arbitrary code by tricking a user into connecting to a malicious server (e.g. by clicking an "smb://" link) or by sending specially crafted packets to an "nmbd" server configured as a local or domain master browser.
The vulnerability is confirmed in versions 3.0.28a and 3.0.29. Prior versions may also be affected.
Solution:
Update to version 3.0.30 or apply patch.
http://us5.samba.org/samba/ftp/patches/security/samba-3.0.29-CVE-2008-1105.patch
Provided and/or discovered by:
Alin Rad Pop, Secunia Research.
Changelog:
2008-05-29: Updated "Solution" and "Original Advisory" sections.
Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2008-20/
Samba:
http://www.samba.org/samba/security/CVE-2008-1105.html
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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