Description
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."
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
Affected products
- Microsoft / .net_framework4.0 – 4.0
- Microsoft / .net_framework3.5.1 – 3.5.1
- Microsoft / .net_framework2.0 – 2.0
- Microsoft / .net_framework3.5 – 3.5
- Microsoft / .net_framework2.0 – 2.0
- Microsoft / .net_framework3.5 – 3.5