جزئیات آسیب‌پذیری

Gotenberg is a Docker-powered stateless API for PDF files. In versions 8.30.1 and earlier, the metadata write endpoint validates metadata keys for control characters but leaves metadata values unsanitized. A newline character in a metadata value splits the ExifTool stdin line into two separate arguments, allowing injection of arbitrary ExifTool pseudo-tags such as -FileName, -Directory, -SymLink, and -HardLink. This is a bypass of the incomplete key-sanitization fix introduced in v8.30.1. An unauthenticated attacker can rename or move any PDF being processed to an arbitrary path in the container filesystem, overwrite arbitrary files, or create symlinks and hard links at arbitrary paths.

• https://github.com/gotenberg/gotenberg/commit/405f1069c026bb08f319fb5a44e5c67c33208318 x_refsource_MISC
• https://github.com/gotenberg/gotenberg/security/advisories/GHSA-q7r4-hc83-hf2q x_refsource_CONFIRM