Vulnerability details

backpack/crud provides Create, Read, Update & Delete (CRUD) functions for Backpack, a collection of Laravel packages that help users build custom administration panels. Prior to 4.1.70, 5.6.2, 6.8.13, and 7.0.36, Backpack\CRUD\Stats::makeCurlRequest in src/Stats.php is reached from BackpackServiceProvider::boot() and constructs a shell command with a URL influenced by the HTTP Host header, which it passes to exec() without adequate shell neutralization. An unauthenticated attacker whose malformed Host value reaches PHP can inject operating-system commands when exec() and curl are available and the 1-in-100 random gate is reached. Repeated requests can reach the random gate. Successful exploitation executes commands as the web-server user, exposing environment secrets, files, and reachable services and permitting data modification or service disruption. Common reverse-proxy Host validation and hardened PHP configurations that disable exec() reduce reachability but do not correct the vulnerable construction. This issue is fixed in versions 4.1.70, 5.6.2, 6.8.13, and 7.0.36.

• https://github.com/Laravel-Backpack/CRUD/security/advisories/GHSA-mrc5-3mm3-45c5 x_refsource_CONFIRM
• https://github.com/Laravel-Backpack/CRUD/pull/6012 x_refsource_MISC
• https://github.com/Laravel-Backpack/CRUD/commit/0f2faafc22a15d77c14370f163d8f739f933c28c x_refsource_MISC
• https://github.com/Laravel-Backpack/CRUD/commit/1476a3769d94a410a2d2e9576deb522e84002f2a x_refsource_MISC
• https://github.com/Laravel-Backpack/CRUD/commit/282ba2a0b88749fb1888b3836678ba462d7023f0 x_refsource_MISC
• https://github.com/Laravel-Backpack/CRUD/commit/471935e296b1be1a7216fdf10c8823e1f512f601 x_refsource_MISC
• https://github.com/Laravel-Backpack/CRUD/releases/tag/4.1.72 x_refsource_MISC
• https://github.com/Laravel-Backpack/CRUD/releases/tag/5.6.2 x_refsource_MISC
• https://github.com/Laravel-Backpack/CRUD/releases/tag/6.8.13 x_refsource_MISC
• https://github.com/Laravel-Backpack/CRUD/releases/tag/7.0.36 x_refsource_MISC