Vulnerability Monitor

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CVE-2011-1271

The JIT compiler in Microsoft .NET Framework 3.5 Gold and SP1, 3.5.1, and 4.0, when IsJITOptimizerDisabled is false, does not properly handle expressions related to null strings, which allows context-dependent attackers to bypass intended access restrictions, and consequently execute arbitrary code, in opportunistic circumstances by leveraging a crafted application, as demonstrated by (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, or (3) a crafted .NET Framework application, aka ".NET Framework JIT Optimization Vulnerability."

Published

2011-05-10T19:55:02.027

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 7.7 (HIGH)

CVSSv2 Vector

AV:N/AC:H/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: HIGH
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

4.9

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-264
  • Type: Secondary
    CWE-476
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application microsoft .net_framework 4.0 Yes
Operating System microsoft windows_2003_server * No
Operating System microsoft windows_7 - No
Operating System microsoft windows_7 - No
Operating System microsoft windows_server_2003 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 - No
Operating System microsoft windows_server_2008 r2 No
Operating System microsoft windows_server_2008 r2 No
Operating System microsoft windows_vista * No
Operating System microsoft windows_vista * No
Operating System microsoft windows_xp * No
Operating System microsoft windows_xp - No
Application microsoft .net_framework 3.5.1 Yes
Operating System microsoft windows_7 - No
Operating System microsoft windows_7 - No
Operating System microsoft windows_7 - No
Operating System microsoft windows_server_2008 r2 No
Operating System microsoft windows_server_2008 r2 No
Application microsoft .net_framework 2.0 Yes
Operating System microsoft windows_2003_server * No
Operating System microsoft windows_server_2003 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 - No
Operating System microsoft windows_vista * No
Operating System microsoft windows_vista * No
Operating System microsoft windows_xp * No
Operating System microsoft windows_xp - No
Application microsoft .net_framework 3.5 Yes
Operating System microsoft windows_2003_server * No
Operating System microsoft windows_server_2003 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 - No
Operating System microsoft windows_vista * No
Operating System microsoft windows_vista * No
Operating System microsoft windows_xp * No
Operating System microsoft windows_xp - No
Application microsoft .net_framework 2.0 Yes
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_vista * No
Application microsoft .net_framework 3.5 Yes
Operating System microsoft windows_2003_server * No
Operating System microsoft windows_server_2003 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_server_2008 * No
Operating System microsoft windows_vista * No
Operating System microsoft windows_vista * No
Operating System microsoft windows_xp * No
Operating System microsoft windows_xp - No
References