OPNsense up to 23.6 Configuration Directory /conf/ default permission

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in OPNsense up to 23.6. This affects an unknown function of the file /conf/ of the component Configuration Directory Handler. Such manipulation leads to default permission. This vulnerability is traded as CVE-2023-39004. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in OPNsense up to 23.6. Affected by this issue is an unknown function of the file /conf/ of the component Configuration Directory Handler. The manipulation with an unknown input leads to a default permission vulnerability. Using CWE to declare the problem leads to CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. Impacted is confidentiality. CVE summarizes:

Insecure permissions in the configuration directory (/conf/) of OPNsense before 23.7 allow attackers to access sensitive information (e.g., hashed root password) which could lead to privilege escalation.

The weakness was shared 08/10/2023. The advisory is shared for download at logicaltrust.net. This vulnerability is handled as CVE-2023-39004 since 07/25/2023. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1222.

Upgrading to version 23.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-42761). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Default permission
CWE: CWE-276 / CWE-266
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

Timelineinfo

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

Sourcesinfo

Advisory: logicaltrust.net
Status: Confirmed

CVE: CVE-2023-39004 (🔍)
GCVE (CVE): GCVE-0-2023-39004
GCVE (VulDB): GCVE-100-236684
EUVD: 🔍

Entryinfo

Created: 08/10/2023 08:32
Updated: 01/22/2026 10:08
Changes: 08/10/2023 08:32 (40), 09/02/2023 18:29 (11), 01/22/2026 10:08 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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