Debian: DSA-4644-1 Moderate: Fix for Tor Denial of Service Issue

A denial of service vulnerability (by triggering high CPU consumption)
was found in Tor, a connection-based low-latency anonymous communication
system.

For the stable distribution (buster), this problem has been fixed in
version 0.3.5.10-1.

For the oldstable distribution (stretch), support for tor is now
discontinued. Please upgrade to the stable release (buster) to continue
receiving tor updates.

We recommend that you upgrade your tor packages.

For the detailed security status of tor please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/tor

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/