جزئیات آسیب‌پذیری

MyBB is free and open source forum software. From 1.8.13 until 1.8.40, the installer module does not properly escape user-supplied database configuration values written to the configuration file, resulting in PHP code injection and remote code execution when the installer is available. install/index.php processes the values with addcslashes(), but the $characters argument added in MyBB 1.8.13 does not include the backslash character, allowing crafted input to escape the generated PHP string. The uniquely identifying implementation details include introduced in MyBB 1.8.13. This issue is fixed in version 1.8.40.

• https://github.com/mybb/mybb/security/advisories/GHSA-gpc4-77rp-3xqr x_refsource_CONFIRM
• https://github.com/mybb/mybb/commit/0fe713e3b964bfc878ea65bdd9f746f585f6ebbf x_refsource_MISC
• https://github.com/mybb/mybb/releases/tag/mybb_1840 x_refsource_MISC
• https://mybb.com/versions/1.8.40 x_refsource_MISC