From: "Léo Le Bouter via Bug reports for GNU Guix" <bug-guix@gnu.org>
To: 47627@debbugs.gnu.org
Subject: bug#47627: syncthing package is vulnerable to CVE-2021-21404
Date: Wed, 07 Apr 2021 00:40:03 +0200 [thread overview]
Message-ID: <38a8a1cb8749b422642dfa6d5374c242ddb80b42.camel@zaclys.net> (raw)
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CVE-2021-21404 06.04.21 22:15
Syncthing is a continuous file synchronization program. In Syncthing
before version 1.15.0, the relay server `strelaysrv` can be caused to
crash and exit by sending a relay message with a negative length field.
Similarly, Syncthing itself can crash for the same reason if given a
malformed message from a malicious relay server when attempting to join
the relay. Relay joins are essentially random (from a subset of low
latency relays) and Syncthing will by default restart when crashing, at
which point it's likely to pick another non-malicious relay. This flaw
is fixed in version 1.15.0.
We still ship 1.5.0, we crucially need to update that *very* useful
networked daemon package. With the new go importer maybe that's easier.
Also work in the go build system needs to happen IIRC.
Previous discussion about updating syncthing:
https://issues.guix.gnu.org/45476
Léo
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next reply other threads:[~2021-04-06 22:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-06 22:40 Léo Le Bouter via Bug reports for GNU Guix [this message]
2021-04-06 22:51 ` bug#47627: syncthing package is vulnerable to CVE-2021-21404 Leo Famulari
2021-04-09 0:01 ` Leo Famulari
2021-04-12 0:27 ` Léo Le Bouter via Bug reports for GNU Guix
2021-04-12 1:54 ` Leo Famulari
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