Python tarfile infinite loop DoS
The python tarfile module can end up in an infinite loop when opening maliciously malformed tar files. I came across Denial of Service bug bpo39017 when browsing the python bug tracker for security issues (I didn’t discover this bug myself). The error-reproducing zipfile the reporter uploaded is direct from the fuzzer, but I wanted to understand and isolate the issue by making the smallest tarfile which reproduces the bug…