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Samba "send_mailslot()" Buffer Overflow Vulnerability
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Secunia Advisory:
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SA27760
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Release Date:
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2007-12-10
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Last Update:
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2008-02-21
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From local network
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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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| | CVE reference: | CVE-2007-6015 (Secunia mirror)
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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 "send_mailslot()" function. This can be exploited to cause a stack-based buffer overflow with zero bytes via a specially crafted "SAMLOGON" domain logon packet containing a username string placed at an odd offset followed by an overly long GETDC string.
Successful exploitation allows execution of arbitrary code, but requires that the "domain logons" option is enabled.
The vulnerability is confirmed in version 3.0.27a. Prior versions may also be affected.
Solution:
Update to version 3.0.28 or apply patch.
Patch for Samba 3.0.27a:
http://us3.samba.org/samba/ftp/patche...ity/samba-3.0.27a-CVE-2007-6015.patch
Provided and/or discovered by:
Alin Rad Pop, Secunia Research.
Changelog:
2007-12-10: Updated "Solution" section.
2008-02-21: Added link to US-CERT.
Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2007-99/
Samba:
http://us3.samba.org/samba/security/CVE-2007-6015.html
Other References:
US-CERT VU#438395:
http://www.kb.cert.org/vuls/id/438395
Extended Solution:
The "Extended Solution" section is available for Secunia customers only. Request a trial and get access to the Secunia Customer Area and Extended Secunia advisories.
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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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7. Samba Multiple Share Connection Requests Denial of Service
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