Microsoft Windows animated cursor (ANI) buffer overflow

win-ani-code-execution (33301) The risk level is classified as HighHigh Risk

Description:

Microsoft Windows is vulnerable to a stack-based buffer overflow, caused by improper bounds checking of animated cursor (ANI) files by the USER32.DLL file. By persuading a victim to open a specially-crafted animated cursor (ANI) file, a remote attacker could overflow a buffer to corrupt system memory and execute arbitrary code on the system with the privileges of the victim. An attacker could exploit this vulnerability by hosting the malicious file on a Web site or sending it to a victim as an email attachment.

*CVSS:

Base Score: 8
  Access Vector: Remote
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 6.6
  Exploitability: Functional
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS07-017. See References.

References:

  • Determina Security Advisory, March 29, 2007: Vulnerability In Windows Animated Cursor Handling.
  • McAfee Avert Labs Blog, Wednesday March 28, 2007 at 4:44 pm CST: Unpatched Drive-By Exploit Found On The Web.
  • Microsoft Security Advisory (935423): Vulnerability in Windows Animated Cursor Handling.
  • Microsoft Security Bulletin MS07-017: Vulnerabilities in GDI Could Allow Remote Code Execution (925902).
  • ASA-2007-140: MS07-17 Vulnerabilities in GDI Could Allow Remote Code Execution (925902)
  • BID-23194: Microsoft Windows Cursor And Icon ANI Format Handling Remote Buffer Overflow Vulnerability
  • CVE-2007-0038: Stack-based buffer overflow in the animated cursor code in Microsoft Windows 2000 SP4 through Vista allows remote attackers to execute arbitrary code or cause a denial of service (persistent reboot) via a large length value in the second (or later) anih block of a RIFF .ANI, cur, or .ico file, which results in memory corruption when processing cursors, animated cursors, and icons, a variant of CVE-2005-0416, as originally demonstrated using Internet Explorer 6 and 7. NOTE: this might be a duplicate of CVE-2007-1765; if so, then CVE-2007-0038 should be preferred.
  • OSVDB ID: 33629: Microsoft IE Animated Cursor (.ani) Handling Arbitrary Command Execution
  • SA24659: Microsoft Windows Animated Cursor Buffer Overflow Vulnerability
  • SECTRACK ID: 1017827: Microsoft Windows Animated Cursor Bug Lets Remote Users Execute Arbitrary Code
  • US-CERT VU#191609: Microsoft Windows animated cursor stack buffer overflow
  • VUPEN/ADV-2007-1151: Microsoft Windows Cursor and Icon Format Handling Remote Code Execution Vulnerability
  • VUPEN/ADV-2007-1215: Microsoft Windows Code Execution and Privilege Escalation Vulnerabilities (MS07-017)

Platforms Affected:

  • Microsoft Windows 2000 SP4
  • Microsoft Windows 2003
  • Microsoft Windows 2003 Server Itanium
  • Microsoft Windows 2003 Server SP1 Itanium
  • Microsoft Windows 2003 Server SP1
  • Microsoft Windows 2003 Server x64
  • Microsoft Windows Server 2003 SP2 Itanium
  • Microsoft Windows Server 2003 SP2 x64
  • Microsoft Windows Server 2003 SP2
  • Microsoft Windows Vista
  • Microsoft Windows Vista x64
  • Microsoft Windows XP SP2 x64 Professional
  • Microsoft Windows XP SP2
  • Microsoft Windows XP x64 Professional

Reported:

Mar 28, 2007

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