CVE-2019-10153

Severity: medium (CVSS 5.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-07-30 · updated 2026-06-17
Weakness: CWE-172

Description

A flaw was discovered in fence-agents, prior to version 4.3.4, where using non-ASCII characters in a guest VM's comment or other fields would cause fence_rhevm to exit with an exception. In cluster environments, this could lead to preventing automated recovery or otherwise denying service to clusters of which that VM is a member.

Affected products

fence-agents: before 4.3.4 — fixed in 4.3.4
Red Hat Enterprise Linux: 8.0
RedHat Enterprise Linux Server: 7.0
RedHat Enterprise Linux Workstation: 7.0

How to fix

Upgrade to a fixed version: fence-agents 4.3.4. Check the vendor advisory for mitigations.

References

https://access.redhat.com/errata/RHSA-2019:2037
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10153
https://github.com/ClusterLabs/fence-agents/pull/255
https://github.com/ClusterLabs/fence-agents/pull/272
https://access.redhat.com/errata/RHSA-2019:2037
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10153
https://github.com/ClusterLabs/fence-agents/pull/255
https://github.com/ClusterLabs/fence-agents/pull/272

Get alerted when CVE-2019-10153 or the next vulnerability affects your stack