Weakness · Medium
CWE-414: Missing Lock Check
What it is
A product does not check to see if a lock is present before performing sensitive operations on a resource.
- Severity (our rating)
- Medium
- Likelihood of exploit
- Not rated by MITRE
- Introduced during
- Architecture and Design, Implementation
- Exploited in the wild
- No CVE in CISA's catalog
What an attacker can do
- Modify Application Data (Integrity, Availability)
- DoS: Instability (Integrity, Availability)
- DoS: Crash, Exit, or Restart (Integrity, Availability)
How to prevent it
Architecture and Design
- Implement a reliable lock mechanism.
How to find it
- 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.)
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Start freeSource: MITRE Common Weakness Enumeration, CWE version 4.19.1. CWE is a trademark of The MITRE Corporation.