Lack of data validation - Type confusion In php7.4
Description
In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Aliases
1. 2. 3. 4. 5.