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Fencer Vulns
medium 6.5

CVE-2023-0821 json

Nomad Client Vulnerable to Decompression Bombs in Artifact Block

published 2023-02-16 3 y ago modified 2026-06-17 4 mo ago also GHSA-w479-w22g-cffh , GO-2023-1581 , EUVD-2023-0807

cvss
6.5
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 56%
public exploits
0
none known

Summary

HashiCorp Nomad and Nomad Enterprise 1.2.15 up to 1.3.8, and 1.4.3 jobs using a maliciously compressed artifact stanza source can cause excessive disk usage. Fixed in 1.2.16, 1.3.9, and 1.4.4.

Patch / fix

  • go github.com/hashicorp/nomad 1.2.16, 1.3.9, 1.4.4
  • hashicorp nomad 1.2.15, 1.3.9, 1.4.4

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-2023-0821 updated cvss 6.5

hashicorp/nomad: Nomad Client Vulnerable to Decompression Bombs in Artifact Block

  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/logging-loki-rhel8, openshift-logging/lokistack-gateway-rhel8 Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/thanos-rhel7 Red Hat OpenShift Container Platform 4 openshift4/ose-installer, openshift4/ose-prometheus, openshift4/ose-thanos-rhel8, openshift4/ose-prom-label-proxy, openshift4/ose-prometheus-rhel9-operator, openshift4/ose-cluster-monitoring-rhel9-operator, +1 more Red Hat Openshift Container Storage 4 ocs4/cephcsi-rhel8, ocs4/mcg-rhel8-operator, ocs4/ocs-rhel8-operator Red Hat Openshift Data Foundation 4 odf4/cephcsi-rhel9, odf4/mcg-rhel9-operator, odf4/ocs-rhel9-operator, odf4/odf-rhel8-operator, odf4/odr-rhel8-operator, odf4/odf-multicluster-rhel9-operator Red Hat OpenShift Dev Spaces devspaces/traefik-rhel8
    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
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/hashicorp/nomad
>=1.2.15, <1.2.16
>=1.3.0, <1.3.9
>=1.4.0, <1.4.4
1.2.16
1.3.9
1.4.4

Affected products

  • HashiCorp Nomad
  • HashiCorp Nomad Enterprise

Classification

Weakness
  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)
  • 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.