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Vulnerability Details : CVE-2006-3942

The server driver (srv.sys) in Microsoft Windows NT 4.0, 2000, XP, and Server 2003 allows remote attackers to cause a denial of service (system crash) via an SMB_COM_TRANSACTION SMB message that contains a string without null character termination, which leads to a NULL dereference in the ExecuteTransaction function, possibly related to an "SMB PIPE," aka the "Mailslot DOS" vulnerability. NOTE: the name "Mailslot DOS" was derived from incomplete initial research; the vulnerability is not associated with a mailslot.
Publish Date : 2006-07-31 Last Update Date : 2018-10-17
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service

- Related OVAL Definitions

Title Definition Id Class Family
Server Service Denial of Service Vulnerability oval:org.mitre.oval:def:428 windows
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2006-3942

# Product Type Vendor Product Version Update Edition Language
1 OS Microsoft Windows 2000 SP4 FR Version Details Vulnerabilities
2 OS Microsoft Windows 2003 Server R2 Version Details Vulnerabilities
3 OS Microsoft Windows 2003 Server SP1 Version Details Vulnerabilities
4 OS Microsoft Windows 2003 Server SP1 Itanium Version Details Vulnerabilities
5 OS Microsoft Windows 2003 Server 64-bit Version Details Vulnerabilities
6 OS Microsoft Windows 2003 Server Itanium Version Details Vulnerabilities
7 OS Microsoft Windows Xp 64-bit Version Details Vulnerabilities
8 OS Microsoft Windows Xp SP1 Tablet Pc Version Details Vulnerabilities
9 OS Microsoft Windows Xp SP2 Tablet Pc Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Microsoft Windows 2000 1
Microsoft Windows 2003 Server 5
Microsoft Windows Xp 3

- References For CVE-2006-3942
SECTRACK 1016606
SECTRACK 1017035
XF smb-malformed-pipe(27999)
MS MS06-063
VUPEN ADV-2006-3037
ISS 20060728 Vulnerability in Server Driver could result in Denial of Service
BID 19215 Microsoft Windows SMB PIPE Remote Denial of Service Vulnerability Release Date:2006-10-20
BUGTRAQ 20060814 CORE-2006-0714: Microsoft SRV.SYS SMB_COM_TRANSACTION Denial of Service

- Metasploit Modules Related To CVE-2006-3942

Microsoft SRV.SYS Mailslot Write Corruption
This module triggers a kernel pool corruption bug in SRV.SYS. Each call to the mailslot write function results in a two byte return value being written into the response packet. The code which creates this packet fails to consider these two bytes in the allocation routine, resulting in a slow corruption of the kernel memory pool. These two bytes are almost always set to "\xff\xff" (a short integer with value of -1).
Module type : auxiliary Rank : normal
Microsoft SRV.SYS Pipe Transaction No Null
This module exploits a NULL pointer dereference flaw in the SRV.SYS driver of the Windows operating system. This bug was independently discovered by CORE Security and ISS.
Module type : auxiliary Rank : normal

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