CWEweakness
CWE-587 Assignment of a Fixed Address to a Pointer
- Abstraction
- Variant
- Structure
- Simple
- Status
- Draft
- Languages
- Assembly, C, C#, C++, Memory-Unsafe
- CWE version
- 5.0
Description
The product sets a pointer to a specific address other than NULL or 0.
Common consequences
• Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands — If one executes code at a known location, an attacker might be able to inject code there beforehand.
• Availability: DoS: Crash, Exit, or Restart, Reduce Maintainability, Reduce Reliability — If the code is ported to another platform or environment, the pointer is likely to be invalid and cause a crash.
• Confidentiality, Integrity: Read Memory, Modify Memory — The data at a known pointer location can be easily read or influenced by an attacker.
Potential mitigations
• [Implementation] Never set a pointer to a fixed address.
Detection methods
• Automated Static Analysis: Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
• Automated Dynamic Analysis: Use tools that are integrated during
compilation to insert runtime error-checking mechanisms
related to memory safety errors, such as AddressSanitizer
(ASan) for C/C++ [REF-1518].
Related
Child of · CWE (2)
Referenced by CVE · weakness (1)
- CVE-2021-28216 BootPerformanceTable pointer is read from an NVRAM variable in PEI. vulnerability
Referenced by CWE · has member (1)
- CWE-884 CWE Cross-section view