Vulnerability Report

CVE-2022-39338

Title: Nextcloud Openid Connect User Backend Improper Input Validation

Improper Input Validation

Proof Of Concept

No public PoC currently indexed for CVE-2022-39338.

CWE Category CWE-20
Published Date Nov 25, 2022
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 3.5 CVSS v3.1
Exploit Probability (EPSS)
0.63%

Vulnerability Summary

CVE-2022-39338: 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.

Impacted Vendors

N
nextcloud 1

Reference Links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5fpw-795h-rg57 https://github.com/nextcloud/user_oidc/pull/496 https://hackerone.com/reports/1687410 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5fpw-795h-rg57 https://github.com/nextcloud/user_oidc/pull/496 https://hackerone.com/reports/1687410
CVSS v3.1
Source Entity [email protected]
Severity LOW
3.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.4
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2022-39338 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

Affected Stack

No specific products linked.