Improper Validation of Function Hook Arguments

Opis

The product adds hooks to user-accessible API functions, but it does not properly validate the arguments. This could lead to resultant vulnerabilities.

Such hooks can be used in defensive software that runs with privileges, such as anti-virus or firewall, which hooks kernel calls. When the arguments are not validated, they could be used to bypass the protection scheme or attack the product itself.

Skutki

• Integrity

  Unexpected State

Zapobieganie

• Architecture and Design

  Ensure that all arguments are verified, as defined by the API you are protecting.

• Architecture and Design

  Drop privileges before invoking such functions, if possible.

Przykłady podatności

• CVE-2007-0708 DoS in firewall using standard Microsoft functions
• CVE-2006-7160 DoS in firewall using standard Microsoft functions
• CVE-2007-1376 function does not verify that its argument is the proper type, leading to arbitrary memory write
• CVE-2007-1220 invalid syscall arguments bypass code execution limits
• CVE-2006-4541 DoS in IDS via NULL argument

Słabość nadrzędna

• CWE-20 Improper Input Validation

Kiedy powstaje

• Implementation

Dotyczy

Not Language-Specific