CVE-2023-39953
Issuer not verified from obtained token in user_oidc
- State
- Published
- Severity
- 4.8 Medium
- Published
- Aug 10, 2023
- Updated
- Oct 3, 2024
- Reserved
- Aug 7, 2023
Description
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, missing verification of the issuer would have allowed an attacker to perform a man-in-the-middle attack returning corrupted or known token they also have access to. user_oidc 1.3.3 contains a patch. No known workarounds are available.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.8 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N | GitHub_M |
Weaknesses
- CWE-303 Incorrect Implementation of Authentication Algorithm
Affected Products
| Product | Versions |
|---|---|
security-advisoriesnextcloud |
|
References
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