HashiCorp Consul/Consul Enterprise Header Content-Length allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in HashiCorp Consul and Consul Enterprise. This vulnerability affects unknown code of the component Header Handler. Such manipulation of the argument Content-Length leads to allocation of resources. This vulnerability is traded as CVE-2025-11375. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in HashiCorp Consul and Consul Enterprise (version unknown). It has been rated as problematic. Affected by this issue is an unknown function of the component Header Handler. The manipulation of the argument Content-Length 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. CVE summarizes:

Consul and Consul Enterprise’s (“Consul”) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12.

The advisory is shared for download at discuss.hashicorp.com. This vulnerability is handled as CVE-2025-11375 since 10/06/2025. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 271967 (Linux Distros Unpatched Vulnerability : CVE-2025-11375), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (271967) and EUVD (EUVD-2025-36561). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (HashiCorp): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: 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: 🔒

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Nessus ID: 271967
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-11375

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/06/2025 CVE reserved
10/28/2025 +22 days Advisory disclosed
10/28/2025 +0 days VulDB entry created
10/30/2025 +1 days VulDB entry last update

Sourcesinfo

Advisory: discuss.hashicorp.com
Status: Confirmed

CVE: CVE-2025-11375 (🔒)
GCVE (CVE): GCVE-0-2025-11375
GCVE (VulDB): GCVE-100-330344
EUVD: 🔒

Entryinfo

Created: 10/28/2025 22:42
Updated: 10/30/2025 00:11
Changes: 10/28/2025 22:42 (62), 10/29/2025 01:36 (1), 10/30/2025 00:11 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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