CVE-2023-6337: Vault May be Vulnerable to a Denial of Service Through Memory Exhaustion When Handling Large HTTP Requests
First published: Fri Dec 08 2023(Updated: )
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.
Credit: security@hashicorp.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| HashiCorp Vault | <=1.12.0 | |
| HashiCorp Vault | <=1.12.0 | |
| HashiCorp Vault | >=1.13.0<1.13.12 | |
| HashiCorp Vault | >=1.13.0<1.13.12 | |
| HashiCorp Vault | >=1.14.0<1.14.8 | |
| HashiCorp Vault | >=1.14.0<1.14.8 | |
| HashiCorp Vault | >=1.15.0<1.15.4 | |
| HashiCorp Vault | >=1.15.0<1.15.4 | |
| go/github.com/hashicorp/vault | >=1.12.0<1.13.12 | 1.13.12 |
| go/github.com/hashicorp/vault | >=1.14.0<1.14.8 | 1.14.8 |
| go/github.com/hashicorp/vault | >=1.15.0<1.15.4 | 1.15.4 |
| <=1.12.0 | ||
| <=1.12.0 | ||
| >=1.13.0<1.13.12 | ||
| >=1.13.0<1.13.12 | ||
| >=1.14.0<1.14.8 | ||
| >=1.14.0<1.14.8 | ||
| >=1.15.0<1.15.4 | ||
| >=1.15.0<1.15.4 |
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Reference Links
- https://discuss.hashicorp.com/t/hcsec-2023-34-vault-vulnerable-to-denial-of-service-through-memory-exhaustion-when-handling-large-http-requests/60741
- https://security.netapp.com/advisory/ntap-20240112-0006/
- https://nvd.nist.gov/vuln/detail/CVE-2023-6337
- https://github.com/hashicorp/vault/pull/24354
- https://github.com/advisories/GHSA-6p62-6cg9-f5f5 (Advisory)
- https://security.netapp.com/advisory/ntap-20240112-0006
Frequently Asked Questions
What is the severity of CVE-2023-6337?
CVE-2023-6337 is classified as a denial of service vulnerability.
How do I fix CVE-2023-6337?
To fix CVE-2023-6337, upgrade to HashiCorp Vault version 1.13.12 or later, 1.14.8 or later, or 1.15.4 or later.
What systems are affected by CVE-2023-6337?
CVE-2023-6337 affects HashiCorp Vault and Vault Enterprise versions from 1.12.0 up to 1.13.12, and specific versions in the 1.14.x and 1.15.x ranges.
What type of attack does CVE-2023-6337 enable?
CVE-2023-6337 enables attackers to exhaust memory on the host, leading to service disruption.
Can CVE-2023-6337 be exploited through unauthenticated requests?
Yes, CVE-2023-6337 can be exploited by sending large unauthenticated HTTP requests.
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