PHP up to 7.2.29/7.3.16/7.4.4 EBCDIC Support urldecode out-of-bounds

Summaryinfo

A vulnerability described as critical has been identified in PHP up to 7.2.29/7.3.16/7.4.4. This impacts the function urldecode of the component EBCDIC Support. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2020-7067. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in PHP up to 7.2.29/7.3.16/7.4.4 (Programming Language Software). Affected by this issue is the function urldecode of the component EBCDIC Support. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In PHP versions 7.2.x below 7.2.30, 7.3.x below 7.3.17 and 7.4.x below 7.4.5, if PHP is compiled with EBCDIC support (uncommon), urldecode() function can be made to access locations past the allocated memory, due to erroneously using signed numbers as array indexes.

The weakness was published 04/27/2020 (Website). The advisory is shared for download at bugs.php.net. This vulnerability is handled as CVE-2020-7067 since 01/15/2020. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

Upgrading to version 7.2.30, 7.3.17 or 7.4.5 eliminates this vulnerability.

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Productinfo

Type

• Programming Language Software

Name

• PHP

Version

• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6
• 7.2.7
• 7.2.8
• 7.2.9
• 7.2.10
• 7.2.11
• 7.2.12
• 7.2.13
• 7.2.14
• 7.2.15
• 7.2.16
• 7.2.17
• 7.2.18
• 7.2.19
• 7.2.20
• 7.2.21
• 7.2.22
• 7.2.23
• 7.2.24
• 7.2.25
• 7.2.26
• 7.2.27
• 7.2.28
• 7.2.29
• 7.3.0
• 7.3.1
• 7.3.2
• 7.3.3
• 7.3.4
• 7.3.5
• 7.3.6
• 7.3.7
• 7.3.8
• 7.3.9
• 7.3.10
• 7.3.11
• 7.3.12
• 7.3.13
• 7.3.14
• 7.3.15
• 7.3.16
• 7.4.0
• 7.4.1
• 7.4.2
• 7.4.3
• 7.4.4

License

• open-source

Website

• Product: https://www.php.org/

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