Nomad Disk DoS via Compressed Artifact 1.3.8, 1.4.3
CVE-2023-0821 Published on February 16, 2023
Nomad Client Vulnerable to Decompression Bombs in Artifact Block
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.
Vulnerability Analysis
CVE-2023-0821 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Data Amplification Vulnerability?
The software does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output. An example of data amplification is a "decompression bomb," a small ZIP file that can produce a large amount of data when it is decompressed.
CVE-2023-0821 has been classified to as a Data Amplification vulnerability or weakness.
Products Associated with CVE-2023-0821
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Affected Versions
HashiCorp Nomad:- Before and including 1.2.15 is affected.
- Before and including 1.3.8 is affected.
- Before and including 1.4.3 is affected.
- Before and including 1.2.15 is affected.
- Before and including 1.3.8 is affected.
- Before and including 1.4.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.