corosync: Denial of service — GLSA 202107-01

A vulnerability in corosync could lead to a Denial of Service condition.

Affected packages

sys-cluster/corosync on all architectures
Affected versions < 3.0.4
Unaffected versions >= 3.0.4

Background

The Corosync Cluster Engine is a Group Communication System with additional features for implementing high availability within applications.

Description

It was discovered that corosync allowed an unauthenticated user to cause a Denial of Service by application crash.

Impact

A remote attacker could send a malicious crafted packet, possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All corosync users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-cluster/corosync-3.0.4"
 

References

Release date
July 03, 2021

Latest revision
July 03, 2021: 1

Severity
low

Exploitable
remote

Bugzilla entries