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.
Products affected by CVE-2023-39954
- cpe:2.3:a:nextcloud:user_oidc:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-39954
0.37%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 58 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-39954
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
2.8
|
5.2
|
NIST | |
|
3.8
|
LOW | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N |
1.2
|
2.5
|
GitHub, Inc. |
CWE ids for CVE-2023-39954
-
The product does not encrypt sensitive or critical information before storage or transmission.Assigned by: security-advisories@github.com (Primary)
References for CVE-2023-39954
-
https://github.com/nextcloud/user_oidc/pull/636
Encrypt stored oidc provider client secrets and id4me client secrets by julien-nc · Pull Request #636 · nextcloud/user_oidc · GitHubPatch
-
https://hackerone.com/reports/1994328
Just a moment...Permissions Required
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https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3f92-5c8p-f6gq
user_oidc app stores client secret unencrypted in database · Advisory · nextcloud/security-advisories · GitHubPatch;Vendor Advisory
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