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CVE-2024-4438: Etcd: incomplete fix for cve-2023-39325/cve-2023-44487 in openstack platform

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-08 · updated 2026-06-17
• Weakness: CWE-400

Description

The etcd package distributed with the Red Hat OpenStack platform has an incomplete fix for CVE-2023-39325/CVE-2023-44487, known as Rapid Reset. This issue occurs because the etcd package in the Red Hat OpenStack platform is using http://golang.org/x/net/http2 instead of the one provided by Red Hat Enterprise Linux versions, meaning it should be updated at compile time instead.

Affected products

• Red Hat OpenStack Platform 16.1: all versions — fixed in 0:3.3.23-16.el8ost
• Red Hat OpenStack Platform 16.2: all versions — fixed in 0:3.3.23-16.el8ost
• Red Hat OpenStack Platform 17.1 for RHEL 9: all versions — fixed in 0:3.4.26-8.el9ost
• Red Hat OpenStack Platform 18.0: all versions

How to fix

Upgrade to a fixed version: Red Hat OpenStack Platform 16.1 0:3.3.23-16.el8ost; Red Hat OpenStack Platform 16.2 0:3.3.23-16.el8ost; Red Hat OpenStack Platform 17.1 for RHEL 9 0:3.4.26-8.el9ost. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2024:2729
• https://access.redhat.com/errata/RHSA-2024:3352
• https://access.redhat.com/errata/RHSA-2024:3467
• https://access.redhat.com/security/cve/CVE-2024-4438
• https://bugzilla.redhat.com/show_bug.cgi?id=2279365
• https://access.redhat.com/errata/RHSA-2024:2729
• https://access.redhat.com/errata/RHSA-2024:3352
• https://access.redhat.com/errata/RHSA-2024:3467
• https://access.redhat.com/security/cve/CVE-2024-4438
• https://bugzilla.redhat.com/show_bug.cgi?id=2279365

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