CVE-2021-21704

medium

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.

References

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/

Details

Source: MITRE

Published: 2021-10-04

Updated: 2021-11-03

Type: CWE-119

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.9

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

Impact Score: 3.6

Exploitability Score: 2.2

Severity: MEDIUM