CVE-2022-31630

Public Exploit
OOB read due to insufficient input validation in imageloadfont()

Description

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. 

Categories

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory php.net
Affected: PHP Group PHP
Published at:
Updated at:

References

Link Tags
https://bugs.php.net/bug.php?id=81739 issue tracking patch vendor advisory exploit

Frequently Asked Questions

What is the severity of CVE-2022-31630?
CVE-2022-31630 has been scored as a medium severity vulnerability.
How to fix CVE-2022-31630?
To fix CVE-2022-31630, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-31630 being actively exploited in the wild?
It is possible that CVE-2022-31630 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-31630?
CVE-2022-31630 affects PHP Group PHP.
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