Vulnerability Details CVE-2023-39954
user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, an attacker that obtained at least read access to a snapshot of the database can impersonate the Nextcloud server towards linked servers. user_oidc 1.3.3 contains a patch. No known workarounds are available.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 58.2%
CVSS Severity
CVSS v3 Score 3.8
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3f92-5c8p-f6gq
- https://github.com/nextcloud/user_oidc/pull/636
- https://hackerone.com/reports/1994328
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3f92-5c8p-f6gq
- https://github.com/nextcloud/user_oidc/pull/636
- https://hackerone.com/reports/1994328
Products affected by CVE-2023-39954
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cpe:2.3:a:nextcloud:user_oidc:1.0.0
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cpe:2.3:a:nextcloud:user_oidc:1.1.0
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cpe:2.3:a:nextcloud:user_oidc:1.2.0
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cpe:2.3:a:nextcloud:user_oidc:1.2.1
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cpe:2.3:a:nextcloud:user_oidc:1.3.0
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cpe:2.3:a:nextcloud:user_oidc:1.3.1
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cpe:2.3:a:nextcloud:user_oidc:1.3.2