Common Weakness Enumeration
CWE-457
AllowedUse of Uninitialized Variable
Abstraction: Variant · Status: Draft
The code uses a variable that has not been initialized, leading to unpredictable or unintended results.
141 vulnerabilities reference this CWE, most recent first.
CVE-2019-11038 (GCVE-0-2019-11038)
Vulnerability from cvelistv5 – Published: 2019-06-18 23:28 – Updated: 2024-09-16 21:04
VLAI
EPSS
VEX
Title
Uninitialized read in gdImageCreateFromXbm
Summary
When using the gdImageCreateFromXbm() function in the GD Graphics Library (aka LibGD) 2.2.5, as used in the PHP GD extension in PHP versions 7.1.x below 7.1.30, 7.2.x below 7.2.19 and 7.3.x below 7.3.6, it is possible to supply data that will cause the function to use the value of uninitialized variable. This may lead to disclosing contents of the stack that has been left there by previous code.
Severity
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
php
CNA
References
18 references
Impacted products
Date Public
2019-05-28 00:00
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Mitigation MIT-57
Implementation
Strategy: Attack Surface Reduction
Ensure that critical variables are initialized before first use [REF-1485].
Mitigation
Build and Compilation
Strategy: Compilation or Build Hardening
Most compilers will complain about the use of uninitialized variables if warnings are turned on.
Mitigation
Implementation
Operation
When using a language that does not require explicit declaration of variables, run or compile the software in a mode that reports undeclared or unknown variables. This may indicate the presence of a typographic error in the variable's name.
Mitigation
Requirements
Strategy: Language Selection
Choose a language that is not susceptible to these issues.
Mitigation
Architecture and Design
Mitigating technologies such as safe string libraries and container abstractions could be introduced.
No CAPEC attack patterns related to this CWE.