Rapid7 Vulnerability & Exploit Database

SUSE: CVE-2021-21404: SUSE Linux Security Advisory

Back to Search

SUSE: CVE-2021-21404: SUSE Linux Security Advisory

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
04/06/2021
Created
05/11/2021
Added
05/09/2021
Modified
05/09/2021

Description

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.

Solution(s)

  • suse-upgrade-syncthing
  • suse-upgrade-syncthing-relaysrv

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;