Description
In PHP 8.3.* before 8.3.5, function mb_encode_mimeheader() runs endlessly for some inputs that contain long strings of non-space characters followed by a space. This could lead to a potential DoS attack if a hostile user sends data to an application that uses this function.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| PHP Group | PHP | >= 8.3.*, < 8.3.5 |
| php_group | php | 8.3 |
References
- http://www.openwall.com/lists/oss-security/2024/04/12/11Mailing List
- https://github.com/php/php-src/security/advisories/GHSA-fjp9-9hwx-59fqExploit, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20240510-0011/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2024/04/12/11Mailing List
- https://github.com/php/php-src/security/advisories/GHSA-fjp9-9hwx-59fqExploit, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KJZK3X6B7FBE32FETDSMRLJXTFTHKWSY/
- https://security.netapp.com/advisory/ntap-20240510-0011/Third Party Advisory
Timeline
- Published
- Apr 29, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Modified