What’s Vulnerable › Vulnerabilities

CVE-2009-3103

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 92.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2009-09-08 · updated 2026-06-16
• Weakness: CWE-399

Description

Array index error in the SMBv2 protocol implementation in srv2.sys in Microsoft Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold and SP2, and Windows 7 RC allows remote attackers to execute arbitrary code or cause a denial of service (system crash) via an & (ampersand) character in a Process ID High header field in a NEGOTIATE PROTOCOL REQUEST packet, which triggers an attempted dereference of an out-of-bounds memory location, aka "SMBv2 Negotiation Vulnerability." NOTE: some of these details are obtained from third party information.

Affected products

• Microsoft Windows Server 2008: sp2-x32, sp2-x64
• Microsoft Windows Vista: all versions

References

• http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0090.html
• http://blog.48bits.com/?p=510
• http://g-laurent.blogspot.com/2009/09/windows-vista7-smb20-negotiate-protocol.html
• http://isc.sans.org/diary.html?storyid=7093
• http://osvdb.org/57799
• http://secunia.com/advisories/36623
• http://www.exploit-db.com/exploits/9594
• http://www.kb.cert.org/vuls/id/135940
• http://www.microsoft.com/technet/security/advisory/975497.mspx
• http://www.reversemode.com/index.php?option=com_content&task=view&id=64&Itemid=1
• http://www.securityfocus.com/archive/1/506300/100/0/threaded
• http://www.securityfocus.com/archive/1/506327/100/0/threaded

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