CVE-2021-21704 Information

Description

In PHP versions 7.3.x below 7.3.29 7.4.x below 7.4.21 and 8.0.x below 8.0.8 when using Firebird PDO driver extension a malicious database server could cause crashes in various database functions such as getAttribute() execute() fetch() and others by returning invalid response data that is not parsed correctly by the driver. This can result in crashes denial of service or potentially memory corruption.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://bugs.php.net/bug.php?id=76450 https://bugs.php.net/bug.php?id=76452 https://bugs.php.net/bug.php?id=76449 https://bugs.php.net/bug.php?id=76448 https://security.netapp.com/advisory/ntap-20211029-0006/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.9