CWE-166
Improper Handling of Missing Special Element
The product receives input from an upstream component, but it does not handle or incorrectly handles when an expected special element is missing.
CVE-2024-38091 (GCVE-0-2024-38091)
Vulnerability from cvelistv5
Published
2024-07-09 17:02
Modified
2025-05-05 17:01
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-166 - Improper Handling of Missing Special Element
Summary
Microsoft WS-Discovery Denial of Service Vulnerability
References
| ► | URL | Tags |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ► | Microsoft | Windows 10 Version 1809 |
Version: 10.0.17763.0 < 10.0.17763.6054 |
|
|
|
||||
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Mitigation
Phases:
Description:
- Developers should anticipate that special elements will be removed in the input vectors of their product. Use an appropriate combination of denylists and allowlists to ensure only valid, expected and appropriate input is processed by the system.
Mitigation ID: MIT-5
Phase: Implementation
Strategy: Input Validation
Description:
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation ID: MIT-20
Phase: Implementation
Strategy: Input Validation
Description:
- Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
No CAPEC attack patterns related to this CWE.