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Fencer Vulns
high 7.5

CVE-2024-4437 json

Etcd: incomplete fix for cve-2021-44716 in openstack platform

published 2024-05-08 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-44548

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

The etcd package distributed with the Red Hat OpenStack platform has an incomplete fix for CVE-2021-44716. 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.

Patch / fix

  • Red Hat Red Hat OpenStack Platform 16.1 0:3.3.23-16.el8ost
  • Red Hat Red Hat OpenStack Platform 16.2 0:3.3.23-16.el8ost
  • etcd openstack 16.2, openstack 16.1 3.3.23-16.el8ost

red hat advisories RHSA-2024:3467RHSA-2024:3352

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-4437 updated cvss 7.5

etcd: Incomplete fix for CVE-2021-44716 in OpenStack Platform

  • Red Hat OpenStack Platform 18.0 etcd
    affected: no fix planned “Will not fix”
  • Red Hat OpenStack Platform 16.1 etcd 3.3.23-16.el8ost
    fixed: vendor fix RHSA-2024:3467
  • Red Hat OpenStack Platform 16.2 etcd 3.3.23-16.el8ost
    fixed: vendor fix RHSA-2024:3352
  • Red Hat OpenStack Platform 17.1 etcd
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat OpenStack Platform 16.1
  • Red Hat Red Hat OpenStack Platform 16.2
  • Red Hat Red Hat OpenStack Platform 17.1
  • Red Hat Red Hat OpenStack Platform 18.0

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.