[tor-relays] Fwd: Upcoming Tor security releases to fix a denial-of-service issue

[Nick Mathewson <nickm@xxxxxxxxxxxxxx>]

---------- Forwarded message ---------
From: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date: Mon, Mar 16, 2020 at 1:25 PM
Subject: Upcoming Tor security releases to fix a denial-of-service issue
To: <tor-talk@xxxxxxxxxxxxxxxxxxxx>


Hello!

Some time this week, we currently plan to put out a set of security
updates for all supported versions of Tor.  These releases will fix a
pair of denial-of-service bugs: one that we are classifying at "low"
severity, and one that we are classifying at "high" severity.

Our recommendation will be for everybody, including relays and
clients, to upgrade once packages are available for their platforms.
Although these vulnerabilities are "only" denial-of-service issues,
any denial-of-service attack against Tor could be leveraged by an
attacker to aid in a traffic analysis attack.

To the best of our knowledge, these vulnerabilities are not being
exploited in the wild.

Currently supported release series are 0.3.5, 0.4.1, 0.4.2, and 0.4.3
(alpha).  If you have not yet upgraded to one of those, the time to do
so is soon.

For our policy and process for handing security issues, please see:
https://trac.torproject.org/projects/tor/wiki/org/teams/NetworkTeam/SecurityPolicy

best wishes,
--
Nick
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