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CVE-2020-7065 In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding,…

Description

In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.

Affected products and versions

Product Affected versions Fixed in
PHP 7.4 7.4.x → < 7.4.4 7.4.4
PHP 7.3 7.3.x → < 7.3.16 7.3.16

References

Timeline

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