Vault HTTP DoS via memory exhaustion 1.12.0+
CVE-2023-6337 Published on December 8, 2023
Vault May be Vulnerable to a Denial of Service Through Memory Exhaustion When Handling Large HTTP Requests
HashiCorp Vault and Vault Enterprise 1.12.0 and newer are vulnerable to a denial of service through memory exhaustion of the host when handling large unauthenticated and authenticated HTTP requests from a client. Vault will attempt to map the request to memory, resulting in the exhaustion of available memory on the host, which may cause Vault to crash.
Fixed in Vault 1.15.4, 1.14.8, 1.13.12.
Vulnerability Analysis
CVE-2023-6337 can be exploited with network access, and does not require authorization privileges or user interaction. 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
Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
Products Associated with CVE-2023-6337
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Affected Versions
HashiCorp Vault:- Version 1.12.0 and below 1.15.4 is affected.
- Version 1.12.0 and below 1.15.4 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.