OOB read due to insufficient input validation in imageloadfont()
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| PHP Group | PHP | 7.4.x to before 7.4.33; 8.0.x to before 8.0.25; 8.1.x to before 8.1.12 | 7.4.33, 8.0.25, 8.1.12 | Patch available | CNA |
- PHP VendorPHP Group Affected 7.4.x to before 7.4.33; 8.0.x to before 8.0.25; 8.1.x to before 8.1.12 Fixed in 7.4.33, 8.0.25, 8.1.12 Patch available CNA
Remediation
- Fix · CNA PHP (PHP Group) Fixed in 7.4.33, 8.0.25, 8.1.12
Red Hat 4 advisories
- RHSA-2023:2903 Released 2023-05-16 · Red Hat rating Moderatephp:7.4 security update
- Red Hat Enterprise Linux AppStream (v. 8) apcu-panel-5.1.18-1.module+el8.3.0+6678+b09f589e.noarch::php:7.4, libzip-1.6.1-1.module+el8.3.0+6678+b09f589e.aarch64::php:7.4, libzip-1.6.1-1.module+el8.3.0+6678+b09f589e.ppc64le::php:7.4 +47
- RHSA-2023:2417 Released 2023-05-09 · Red Hat rating Moderatephp:8.1 security update
- Red Hat Enterprise Linux AppStream (v. 9) apcu-panel-5.1.21-1.module+el9.1.0.z+15477+cb86791d.noarch::php:8.1, php-8.1.14-1.module+el9.2.0+17911+b059dfc2.aarch64::php:8.1, php-8.1.14-1.module+el9.2.0+17911+b059dfc2.ppc64le::php:8.1 +47
- RHSA-2023:0965 Released 2023-02-28 · Red Hat rating Moderatephp security update
- Red Hat Enterprise Linux AppStream (v. 9) php-8.0.27-1.el9_1, php-bcmath-8.0.27-1.el9_1, php-cli-8.0.27-1.el9_1 +22
Show 1 more Red Hat advisories
- RHSA-2023:0848 Released 2023-02-21 · Red Hat rating Moderatephp:8.0 security update
- Red Hat Enterprise Linux AppStream (v. 8) apcu-panel-5.1.20-1.module+el8.6.0+13671+84712317.noarch::php:8.0, libzip-1.7.3-1.module+el8.6.0+13671+84712317.aarch64::php:8.0, libzip-1.7.3-1.module+el8.6.0+13671+84712317.ppc64le::php:8.0 +47
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2023:0848, RHSA-2023:2903 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:0965, RHSA-2023:2417 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2022-31630
- 2026-10-03 Alias added: GHSA-jw98-jrc9-mrx5
References
More PHP Group vulnerabilities
- TI-2024-04260 Argument Injection in PHP-CGI KEVCVSS 3.1CRITICAL 9.8
- TI-2026-78794 PHP remote code execution via stale global state KEVCVSS 4.0CRITICAL 9.2
- TI-2026-78793 Out-of-memory handling flaw in PHP allows remote code execution KEVCVSS 4.0CRITICAL 9.2
- TI-2024-01743 Command injection via array-ish $command parameter of proc_open() CVSS 3.1CRITICAL 9.4
- TI-2022-13555 PDO::quote() may return unquoted string CVSS 3.1CRITICAL 9.1
- TI-2024-10408 Reference counting in php_request_shutdown causes Use-After-Free CVSS 4.0CRITICAL 9.2
Sources
- CVE-2022-31630 · CVE Program
- CVE-2022-31630 · NVD
- FIRST EPSS
- GHSA-jw98-jrc9-mrx5 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-31630 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences