Microsoft Internet Information Services TELNET_STREAM_CONTEXT::OnSendData buffer overflow

ms-iis-onsenddata-bo (64248) The risk level is classified as HighHigh Risk

Description:

Microsoft Internet Information Services is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the TELNET_STREAM_CONTEXT::OnSendData() function. By sending a specially-crafted FTP command, a remote attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges or cause the service to crash.


Consequences:

Gain Access

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 The original bulletin issued by Microsoft has been superseded.

References:

  • IBM Security Protection Alert: Microsoft IIS FTP Interpret-As-Command (IAC) Overflow.
  • Microsoft Security Bulletin MS11-004: Vulnerability in Internet Information Services (IIS) FTP Service Could Allow Remote Code Execution (2489256).
  • Microsoft Security Bulletin MS12-073: Vulnerabilities in Microsoft Internet Information Services (IIS) Could Allow Information Disclosure (2733829).
  • Microsoft Web site: Windows 7.
  • Offensive Security Exploit Database [12-21-2010]: Windows 7 IIS7.5 FTPSVC UNAUTH'D Remote DoS PoC.
  • BID-45542: Microsoft IIS FTP Service Remote Buffer Overflow Vulnerability
  • CVE-2010-3972: Heap-based buffer overflow in the TELNET_STREAM_CONTEXT::OnSendData function in ftpsvc.dll in Microsoft FTP Service 7.0 and 7.5 for Internet Information Services (IIS) 7.0, and IIS 7.5, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a crafted FTP command, aka IIS FTP Service Heap Buffer Overrun Vulnerability. NOTE: some of these details are obtained from third party information.
  • SA42713: Microsoft IIS FTP Server Telnet IAC Character Encoding Vulnerability
  • SECTRACK ID: 1024921: Microsoft IIS FTP Server Lets Remote Users Deny Service
  • US-CERT VU#842372: Microsoft IIS FTP server memory corruption vulnerability
  • VUPEN/ADV-2010-3305: Microsoft Internet Information Services (IIS) FTP Buffer Overflow Vulnerability

Platforms Affected:

  • Microsoft FTP Service for IIS 7.0
  • Microsoft FTP Service for IIS 7.5
  • Microsoft Internet Information Services 7.5
  • Microsoft Windows 7 x64
  • Microsoft Windows 7 x32
  • Microsoft Windows Server 2008 R2 x64
  • Microsoft Windows Server 2008 SP2 x32
  • Microsoft Windows Server 2008 x64
  • Microsoft Windows Server 2008 x32
  • Microsoft Windows Server 2008 Itanium
  • Microsoft Windows Server 2008 SP2 x64
  • Microsoft Windows Server 2008 SP2 Itanium
  • Microsoft Windows Server 2008 R2 Itanium
  • Microsoft Windows Vista SP1 x64
  • Microsoft Windows Vista SP1
  • Microsoft Windows Vista SP2 x64
  • Microsoft Windows Vista SP2

Reported:

Dec 21, 2010

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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