HashiCorp Vault/Vault Enterprise up to 1.15.2 HTTP Request allocation of resources
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.4 | $0-$5k | 0.00 |
Summary
A vulnerability identified as critical has been detected in HashiCorp Vault and Vault Enterprise. The affected element is an unknown function of the component HTTP Request Handler. The manipulation leads to allocation of resources. This vulnerability is traded as CVE-2023-6337. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.
Details
A vulnerability was found in HashiCorp Vault and Vault Enterprise. It has been rated as critical. This issue affects some unknown functionality of the component HTTP Request Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product 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. Impacted is availability. The summary by CVE is:
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.
The weakness was shared 12/09/2023. It is possible to read the advisory at discuss.hashicorp.com. The identification of this vulnerability is CVE-2023-6337 since 11/27/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.
The vulnerability scanner Nessus provides a plugin with the ID 296047 (Azure Linux 3.0 Security Update: cert-manager (CVE-2023-6337)), which helps to determine the existence of the flaw in a target environment.
Upgrading to version 1.15.4 eliminates this vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (296047). Be aware that VulDB is the high quality source for vulnerability data.
Product
Vendor
Name
Version
- 1.2.5
- 1.3.4
- 1.3.6
- 1.3.7
- 1.3.8
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.5.0
- 1.5.1
- 1.5.6
- 1.5.7
- 1.5.8
- 1.5.9
- 1.6.0
- 1.6.1
- 1.6.2
- 1.6.3
- 1.6.4
- 1.6.5
- 1.6.6
- 1.7.0
- 1.7.1
- 1.7.2
- 1.7.3
- 1.7.4
- 1.7.5
- 1.7.6
- 1.7.7
- 1.8.0
- 1.8.3
- 1.8.4
- 1.8.5
- 1.8.6
- 1.9.0
- 1.9.1
- 1.9.10
- 1.10.0
- 1.10.1
- 1.10.2
- 1.10.3
- 1.10.6
- 1.10.7
- 1.10.11
- 1.11.3
- 1.11.4
- 1.11.7
- 1.11.8
- 1.11.9
- 1.12.0
- 1.12.3
- 1.12.4
- 1.12.5
- 1.12.11
- 1.13.0
- 1.13.1
- 1.13.5
- 1.13.7
- 1.13.8
- 1.13.9
- 1.13.10
- 1.14.0
- 1.14.1
- 1.14.3
- 1.14.4
- 1.14.5
- 1.14.6
- 1.14.10
- 1.15
- 1.15.0
- 1.15.1
- 1.15.2
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.5VulDB Meta Temp Score: 7.4
VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CNA Base Score: 7.5
CNA Vector (HashiCorp Inc.): 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Allocation of resourcesCWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 296047
Nessus Name: Azure Linux 3.0 Security Update: cert-manager (CVE-2023-6337)
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Vault/Vault Enterprise 1.15.4
Timeline
11/27/2023 🔍12/09/2023 🔍
12/09/2023 🔍
01/25/2026 🔍
Sources
Advisory: discuss.hashicorp.comStatus: Confirmed
CNA: HashiCorp Inc.
CVE: CVE-2023-6337 (🔍)
GCVE (CVE): GCVE-0-2023-6337
GCVE (VulDB): GCVE-100-247319
Entry
Created: 12/09/2023 02:34Updated: 01/25/2026 17:58
Changes: 12/09/2023 02:34 (48), 02/14/2025 07:12 (27), 01/25/2026 17:58 (2)
Complete: 🔍
Cache ID: 216::103
Be aware that VulDB is the high quality source for vulnerability data.
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