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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
3.8 LOW
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
GitHub_MCNA
3.8 LOW
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 58%
VendorProductVersion
nextclouduser_oidc
1.0.0 ≤
𝑥
< 1.3.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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