UNKNOWNCVE-2020-7062

Null Pointer Dereference in PHP Session Upload Progress

Platform

php

Component

php

Fixed in

7.4.3

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.

How to fix

Actualice a la última versión de PHP. Específicamente, actualice a la versión 7.2.28 o superior, 7.3.15 o superior, o 7.4.3 o superior. Esto corrige la vulnerabilidad de desreferencia de puntero nulo.

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