CyberRota Analysis
AI-GeneratedGrav CMS versions prior to 2.0.16 are vulnerable to a symlink following issue in the Scheduler Job::createLockFile() function, allowing local attackers to overwrite arbitrary files by exploiting predictable lock file paths in a world-writable temp directory. This vulnerability can lead to unauthorized file modifications, potentially compromising the integrity of the application or server. Organizations using Grav CMS should prioritize patching to mitigate the risk of local attacks that could exploit this flaw.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
Grav CMS before 2.0.16 contains a symlink following vulnerability in Scheduler Job::createLockFile() that allows local attackers to overwrite arbitrary files by pre-creating symlinks at predictable lock file paths in the world-writable temp directory. Attackers can place a symlink at the predictable lock path pointing to any file the web server process can write to, and the next scheduled job run will follow the symlink and overwrite the target file's content with the job ID string.