GHSA-rpc6-h455-3rx5 Celery local privilege escalation vulnerability

• PyPI celery: >= 2.1.0, < 2.2.8 → fixed in 2.2.8 • PyPI celery: >= 2.3.0, < 2.3.4 → fixed in 2.3.4 • PyPI celery: >= 2.4.0, < 2.4.4 → fixed in 2.4.4

Celery 2.1 and 2.2 before 2.2.8, 2.3 before 2.3.4, and 2.4 before 2.4.4 changes the effective id but not the real id during processing of the --uid and --gid arguments to celerybeat, celeryd_detach, celeryd-multi, and celeryev, which allows local users to gain privileges via vectors involving crafted code that is executed by the worker process.