Afs3-fileserver Exploit File

Tools like rx-bpf-sentry (open-source) can inspect Rx opcodes and drop packets to FS_FetchData64 if the length parameter exceeds sane limits (e.g., > 4096).

/usr/lib/openafs/afsmonitor -version

While not a classic exploit, the "AFS-Bleed" information leak (CVE-2021-32710) allowed an authenticated user to read kernel memory from the fileserver . Several threat actors combined this with a separate privilege escalation in the volserver to take over an entire cell at a European grid computing facility. The incident remained undisclosed for nine months. afs3-fileserver exploit