Vulnerability DatabaseCVE-2022-39338
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CVE-2022-39338
November 25, 2022
user_oidc is an OpenID Connect user backend for Nextcloud. Versions prior to 1.2.1 did not properly validate discovery urls which may lead to a stored cross site scripting attack vector. The impact is limited due to the restrictive CSP that is applied on this endpoint. Additionally this vulnerability has only been shown to be exploitable in the Safari web browser. This issue has been addressed in version 1.2.1. Users are advised to upgrade. Users unable to upgrade should urge their users to avoid using the Safari web browser.
Related Resources (5)
https://hackerone.com/reports/1687410
https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39338.json
https://nvd.nist.gov/vuln/detail/CVE-2022-39338
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5fpw-795h-rg57
https://github.com/nextcloud/user_oidc/pull/496
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CVSS v4
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79
Improper Input Validation
CWE-20
EPSS
Base Score:
0.31