Cyber Resilience

CVE-2023-0821

Hashicorp Nomad ≤ 1.2.15

Published
16 February 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 6.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0080 53th percentile
Risk Priority 52 floored blend · peak EPSS

Summary

CVE-2023-0821 is a medium-severity Data Amplification (CWE-409) vulnerability in Hashicorp Nomad. Its CVSS base score is 6.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Endpoint Denial of Service (T1499); ranked in the top 47% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

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.

CWE(s)
CWE-409NVD-CWE-Other

Related Threats

MITRE ATT&CK Enterprise Techniques

T1499 Endpoint Denial of Service Impact
Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.
attack.mitre.org →
T1499.003 Application Exhaustion Flood Impact
Adversaries may target resource intensive features of applications to cause a denial of service (DoS), denying availability to those applications.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-3300Same product: Hashicorp Nomad
CVE-2023-3299Same product: Hashicorp Nomad
CVE-2025-3744Same product: Hashicorp Nomad
CVE-2024-6717Same product: Hashicorp Nomad
CVE-2024-12678Same product: Hashicorp Nomad
CVE-2024-1329Same product: Hashicorp Nomad
CVE-2023-1782Same product: Hashicorp Nomad
CVE-2023-0475Same vendor: Hashicorp
CVE-2023-3072Same product: Hashicorp Nomad
CVE-2024-10975Same product: Hashicorp Nomad

Affected Assets

hashicorp
nomad
≤ 1.2.15 · ≤ 1.2.15 · 1.3.0 — 1.3.9

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-5 Denial-of-service Protection
addresses: CWE-409

Limits effects of data amplification from compressed or malicious inputs.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure-development practices include input-validation and resource-limit checks that prevent improper handling of compressed data.

DE.CM-09 partial match
prevents

Runtime monitoring of compute resources can detect exhaustion caused by decompression bombs.

PR.IR-04 partial match
prevents

Capacity planning and monitoring directly limits the availability impact of data-amplification attacks.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can uncover decompression-bomb vulnerabilities before release.

A.8.14 Redundancy of information processing facilities partial match
mitigates

Redundancy helps availability but does not address the root cause of the weakness.

A.8.16 Monitoring activities partial match
finds

Monitoring can detect anomalous resource usage but does not prevent the weakness.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle includes input validation and resource-limit checks that mitigate data-amplification attacks.

A.8.26 Application security requirements partial match
prevents

Application security requirements can mandate limits on decompression size and ratio.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles encourage defensive design against resource-exhaustion threats.

References