OPNsense up to 23.6 System Halt API /system/halt cross-site request forgery

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in OPNsense up to 23.6. This impacts an unknown function of the file /system/halt of the component System Halt API. Executing a manipulation can lead to cross-site request forgery. This vulnerability is registered as CVE-2023-38999. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in OPNsense up to 23.6 and classified as problematic. This vulnerability affects an unknown function of the file /system/halt of the component System Halt API. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. The CWE definition for the vulnerability is CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. As an impact it is known to affect integrity. CVE summarizes:

A Cross-Site Request Forgery (CSRF) in the System Halt API (/system/halt) of OPNsense before 23.7 allows attackers to cause a Denial of Service (DoS) via a crafted GET request.

The weakness was published 08/10/2023. The advisory is shared for download at logicaltrust.net. This vulnerability was named CVE-2023-38999 since 07/25/2023. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 23.7 eliminates this vulnerability. Applying the patch 5d68f43d1f254144831881fc87d885eed120cf3c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-42756). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

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

CVSSv2info

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

Exploitinginfo

Class: Cross-site request forgery
CWE: CWE-352 / CWE-862 / CWE-863
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OPNsense 23.7
Patch: 5d68f43d1f254144831881fc87d885eed120cf3c

Timelineinfo

07/25/2023 🔍
08/10/2023 +16 days 🔍
08/10/2023 +0 days 🔍
01/22/2026 +896 days 🔍

Sourcesinfo

Advisory: 5d68f43d1f254144831881fc87d885eed120cf3c
Status: Confirmed

CVE: CVE-2023-38999 (🔍)
GCVE (CVE): GCVE-0-2023-38999
GCVE (VulDB): GCVE-100-236740
EUVD: 🔍

Entryinfo

Created: 08/10/2023 09:02
Updated: 01/22/2026 06:11
Changes: 08/10/2023 09:02 (42), 09/05/2023 08:23 (1), 01/22/2026 06:11 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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