also saw this on my Tor exit dannydevito, but these messages only appeared once in logs (UTC time)
Nov 2 04:21:44 <daemon.warn> dannydevito Tor: Possible zlib bomb; abandoning stream. Nov 2 04:22:42 <daemon.warn> dannydevito Tor: Possible compression bomb; abandoning stream. Nov 2 04:22:42 <daemon.warn> dannydevito syslogd: last message repeated 2 times Nov 2 04:23:42 <daemon.warn> dannydevito Tor: Possible zlib bomb; abandoning stream. Nov 2 04:23:42 <daemon.warn> dannydevito Tor: Possible compression bomb; abandoning stream. Nov 2 04:23:42 <daemon.warn> dannydevito syslogd: last message repeated 3 times
On 11/3/20 05:59, Christoph Graf wrote:
Same here on my bridge:
Nov 2 06:21:04 raspipfupf Tor[2556]: Possible zlib bomb; abandoning stream. Nov 2 06:21:04 raspipfupf Tor[2556]: Possible zlib bomb; abandoning stream.
Time is UTC+1, nothing before and after
Cheers, Christoph
On 02.11.20 11:05, Guinness wrote:
Hi all,
We are at least 3 users running middle relays from 0.4.4.5 and after having some logs like those :
Nov 02 05:30:55.000 [warn] Possible compression bomb; abandoning stream. Nov 02 05:30:55.000 [warn] Possible zlib bomb; abandoning stream. Nov 02 05:30:56.000 [warn] Possible compression bomb; abandoning stream. Nov 02 05:31:00.000 [warn] Possible compression bomb; abandoning stream. Nov 02 05:31:00.000 [warn] Possible compression bomb; abandoning stream. Nov 02 05:31:00.000 [warn] Possible compression bomb; abandoning stream. Nov 02 05:31:55.000 [warn] Possible compression bomb; abandoning stream. Nov 02 05:31:56.000 [warn] Possible compression bomb; abandoning stream.I'm wondering if this is an attack or a new feature (haven't checked yet) but I'd like to know how many users are impacted.
The interesting informations are :
- Number of warnings
- What kind of relay it is (middle, exit, entry)
After your answers, I'll complete the issue I have opened on the bug tracker.
Cheers,
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