Vulnerabilities > CVE-2022-31630 - Out-of-bounds Read vulnerability in PHP

CVSS 7.1 - HIGH

Attack vector

LOCAL

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

NONE

Availability impact

HIGH

local

low complexity

php

CWE-125

NVD

Published: 2022-11-14

Updated: 2024-04-02

Summary

In PHP versions prior to 7.4.33, 8.0.25 and 8.1.12, when using imageloadfont() function in gd extension, it is possible to supply a specially crafted font file, such as if the loaded font is used with imagechar() function, the read outside allocated buffer will be used. This can lead to crashes or disclosure of confidential information.

Vulnerable Configurations

Part	Description	Count
Application	Php PHP PHP 8.0.0 PHP PHP 8.0.1 PHP PHP 8.0.2 PHP PHP 8.0.3 PHP PHP 8.0.4 PHP PHP 8.0.5 PHP PHP 8.0.6 PHP PHP 8.0.7 PHP PHP 8.0.8 PHP PHP 8.0.9 PHP PHP 8.0.10 PHP PHP 8.0.11 PHP PHP 8.0.12 PHP PHP 8.0.13 PHP PHP 8.0.14 PHP PHP 8.0.15 PHP PHP 8.0.16 PHP PHP 8.0.17 PHP PHP 8.0.18 PHP PHP 8.0.19 PHP PHP 8.0.20 PHP PHP 8.0.23 PHP PHP 8.0.24 PHP PHP 8.1.0 PHP PHP 8.1.1 PHP PHP 8.1.2 PHP PHP 8.1.3 PHP PHP 8.1.4 PHP PHP 8.1.5 PHP PHP 8.1.6 PHP PHP 8.1.7 PHP PHP 8.1.8 PHP PHP 8.1.9 PHP PHP 8.1.10 PHP PHP 7.4.0 PHP PHP 7.4.1 PHP PHP 7.4.2 PHP PHP 7.4.3 PHP PHP 7.4.4 PHP PHP 7.4.5 PHP PHP 7.4.6 PHP PHP 7.4.7 PHP PHP 7.4.8 PHP PHP 7.4.9 PHP PHP 7.4.10 PHP PHP 7.4.11 PHP PHP 7.4.12 PHP PHP 7.4.13 PHP PHP 7.4.14 PHP PHP 7.4.15 PHP PHP 7.4.16 PHP PHP 7.4.17 PHP PHP 7.4.18 PHP PHP 7.4.19 PHP PHP 7.4.20 PHP PHP 7.4.21 PHP PHP 7.4.22 PHP PHP 7.4.23 PHP PHP 7.4.24 PHP PHP 7.4.25 PHP PHP 7.4.26 PHP PHP 7.4.27 PHP PHP 7.4.28 PHP PHP 7.4.29 PHP PHP 7.4.30	162

Common Weakness Enumeration (CWE)

CWE-125 - Out-of-bounds Read

Common Attack Pattern Enumeration and Classification (CAPEC)

Overread Buffers
An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

References

https://bugs.php.net/bug.php?id=81739