Incorrect Calculation of Buffer Size
CVE-2023-0568
Summary
In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, core path resolution function allocate buffer one byte too small. When resolving paths with lengths close to system MAXPATHLEN setting, this may lead to the byte after the allocated buffer being overwritten with NUL value, which might lead to unauthorized data access or modification.
- HIGH
- NETWORK
- HIGH
- UNCHANGED
- REQUIRED
- NONE
- HIGH
- HIGH
CWE-131 - Incorrect Calculation of Buffer Size
The software does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.
References
Advisory Timeline
- Published