Microsoft Windows SMB MrxSmbCscIoctlOpenForCopyChunk() buffer overflow
| win-smb-privilege-escalation (26828) |  High Risk |
Description:
Multiple could allow a local attacker to gain elevated privileges on the system caused by a buffer overflow vulnerability in the MrxSmbCscIoctlOpenForCopyChunk() function. A local attacker with valid system credentials could exploit this vulnerability using a specially-crafted application to overflow a buffer and execute arbitrary code on the system with SYSTEM privileges.
Platforms Affected:
- Microsoft, Windows 2000 SP4
- Microsoft, Windows 2003
- Microsoft, Windows 2003 Server x64
- Microsoft, Windows 2003 Server Itanium
- Microsoft, Windows 2003 Server SP1 Itanium
- Microsoft, Windows 2003 Server SP1
- Microsoft, Windows XP Professional x64
- Microsoft, Windows XP SP1
- Microsoft, Windows XP SP2
Remedy:
Apply the appropriate patch for your system, as listed in the latest Microsoft Security Bulletin. See References.
—OR—Use Microsoft Automatic Update if it is supported by your operating system. The original bulletin issued by Microsoft has been superseded.
Consequences:
Gain Privileges
References:
- iDefense Advisory: 06.13.06, Windows MRXSMB.SYS MRxSmbCscIoctlOpenForCopyChunk Overflow at http://www.idefense.com/intelligence/vulnerabilities/display.php?id=408.
- Microsoft Security Bulletin MS06-030, Vulnerability in Server Message Block Could Allow Elevation of Privilege (914389) at http://www.microsoft.com/technet/security/Bulletin/MS06-030.mspx.
- Microsoft Security Bulletin MS08-068, Vulnerability in SMB Could Allow Remote Code Execution (957097) at http://www.microsoft.com/technet/security/bulletin/ms08-068.mspx.
- ASA-2006-126: Windows Security Updates for June 2006 - (MS06-021 - MS06-032)
- BID-18356: Microsoft Windows SMB Driver Local Privilege Escalation Vulnerability
- CVE-2006-2373: The Server Message Block (SMB) driver (MRXSMB.SYS) in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 and earlier allows local users to execute arbitrary code by calling the MrxSmbCscIoctlOpenForCopyChunk function with the METHOD_NEITHER method flag and an arbitrary address, possibly for kernel memory, aka the SMB Driver Elevation of Privilege Vulnerability.
- OSVDB ID: 26440: Microsoft Windows SMB MrxSmbCscIoctlOpenForCopyChunk Function Overflow
- SA20635: Windows SMB Denial of Service and Privilege Escalation
- SECTRACK ID: 1016288: Windows Server Message Block Processing Bugs Let Local Users Gain Elevated Privileges or Deny Service
- VUPEN/ADV-2006-2327: Microsoft Windows SMB Privilege Escalation and DoS Vulnerabilities (MS06-030)
Reported:
Jun 13, 2006
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