CVE-2022-31630

OOB read due to insufficient input validation in imageloadfont()

At a glance

Severity: MEDIUM 6.5
EPSS: EPSS 1.32 % · percentile 71 (2026-10-27)
State: PUBLISHED
Published: 2022-11-14
Updated: 2024-08-03
Assigner: php
NVD status: Modified

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L	php
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L	NVD · security@php.net (Secondary)
CVSS 3.1	HIGH 7.1	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

European references

ENISA EUVD · EUVD-2022-53082
GCVE · GCVE-0-2022-31630

CERT-FR advisories

CERTFR-2022-AVI-992 — Multiples vulnérabilités dans PHP · cert.ssi.gouv.fr
CERTFR-2022-AVI-971 — Multiples vulnérabilités dans PHP · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 7.4.0 < 7.4.33
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 8.0.0 < 8.0.25
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 8.1.0 < 8.1.12

Affected products

Product	Versions
PHP Group · PHP	affected 7.4.x < 7.4.33 ; affected 8.0.x < 8.0.25 ; affected 8.1.x < 8.1.12

References

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

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD