Configuration-secret disclosure via world-readable config file
Published Aug 9, 2023 · Updated Jul 9, 2026
Information disclosure in OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows local users to read secrets. The /conf/config.xml file has mode 0644, granting unprivileged accounts read access to the root password hash and other configuration data. Cracking a recovered root hash enables privilege escalation; otherwise, exploitation remains a local disclosure of sensitive configuration.
Summary
What happened
Information disclosure in OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows local users to read secrets. The /conf/config.xml file has mode 0644, granting unprivileged accounts read access to the root password hash and other configuration data. Cracking a recovered root hash enables privilege escalation; otherwise, exploitation remains a local disclosure of sensitive configuration.
The record
- CVE
- CVE-2023-39004
- Published
- Aug 9, 2023
- Updated
- Jul 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-732, T1552.001
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Aug 9, 2023CVE publishedPublication date reported by the CVE source.
- Jul 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- OPNsense configuration disclosure demonstrationproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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