PHP up to 7.4.29/8.0.19/8.1.6 pdo_mysql Password buffer overflow

Summaryinfo

A vulnerability categorized as critical has been discovered in PHP up to 7.4.29/8.0.19/8.1.6. This vulnerability affects unknown code of the component pdo_mysql. Such manipulation of the argument Password leads to buffer overflow. This vulnerability is listed as CVE-2022-31626. The attack may be performed from remote. In addition, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in PHP up to 7.4.29/8.0.19/8.1.6 (Programming Language Software). It has been rated as critical. Affected by this issue is an unknown functionality of the component pdo_mysql. The manipulation of the argument password with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In PHP versions 7.4.x below 7.4.30, 8.0.x below 8.0.20, and 8.1.x below 8.1.7, when pdo_mysql extension with mysqlnd driver, if the third party is allowed to supply host to connect to and the password for the connection, password of excessive length can trigger a buffer overflow in PHP, which can lead to a remote code execution vulnerability.

The weakness was presented 06/16/2022 as 81719. The advisory is available at bugs.php.net. This vulnerability is handled as CVE-2022-31626 since 05/25/2022. Technical details as well as a public exploit are known.

After 2 weeks, there has been an exploit disclosed. The exploit is available at github.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

Upgrading to version 7.4.30, 8.0.20 or 8.1.7 eliminates this vulnerability.

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Productinfo

Type

• Programming Language Software

Name

• PHP

Version

• 7.4.0
• 7.4.1
• 7.4.2
• 7.4.3
• 7.4.4
• 7.4.5
• 7.4.6
• 7.4.7
• 7.4.8
• 7.4.9
• 7.4.10
• 7.4.11
• 7.4.12
• 7.4.13
• 7.4.14
• 7.4.15
• 7.4.16
• 7.4.17
• 7.4.18
• 7.4.19
• 7.4.20
• 7.4.21
• 7.4.22
• 7.4.23
• 7.4.24
• 7.4.25
• 7.4.26
• 7.4.27
• 7.4.28
• 7.4.29
• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3
• 8.0.4
• 8.0.5
• 8.0.6
• 8.0.7
• 8.0.8
• 8.0.9
• 8.0.10
• 8.0.11
• 8.0.12
• 8.0.13
• 8.0.14
• 8.0.15
• 8.0.16
• 8.0.17
• 8.0.18
• 8.0.19
• 8.1.0
• 8.1.1
• 8.1.2
• 8.1.3
• 8.1.4
• 8.1.5
• 8.1.6

License

• open-source

Website

• Product: https://www.php.org/

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