Secunia Research: Samba "send_mailslot()" Buffer Overflow Vulnerability
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Secunia Research 10/12/2007
- Samba "send_mailslot()" Buffer Overflow Vulnerability -
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Table of Contents
Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10
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1) Affected Software
* Samba 3.0.27a
NOTE: Other versions may also be affected.
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2) Severity
Rating: Moderately critical
Impact: System access
Where: Local network
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3) Vendor's Description of Software
"Samba is an Open Source/Free Software suite that has, since 1992,
provided file and print services to all manner of SMB/CIFS clients,
including the numerous versions of Microsoft Windows operating systems.
Samba is freely available under the GNU General Public License."
Product Link:
http://www.samba.org/
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4) Description of Vulnerability
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.
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5) Solution
A fix should be released later today.
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6) Time Table
22/11/2007 - Vendor notified.
22/11/2007 - vendor-sec notified.
23/11/2007 - Vendor response.
10/12/2007 - Public disclosure.
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7) Credits
Discovered by Alin Rad Pop, Secunia Research.
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8) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2007-6015 for the vulnerability.
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9) About Secunia
Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:
http://corporate.secunia.com/
Secunia also provides a publicly accessible and comprehensive advisory
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http://secunia.com/
Secunia believes that it is important to support the community and to
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security and reliability of software in general:
http://corporate.secunia.com/secunia_research/33/
Secunia regularly hires new skilled team members. Check the URL below
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http://secunia.com/secunia_vacancies/
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
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10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-99/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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