What is the severity of CVE-2022-39339?

CVE-2022-39339 is considered a high-severity vulnerability due to the exposure of sensitive information over unencrypted HTTP.

How do I fix CVE-2022-39339?

To mitigate CVE-2022-39339, upgrade the OpenID Connect user backend for Nextcloud to version 1.2.1 or later.

What information is leaked in CVE-2022-39339?

CVE-2022-39339 exposes sensitive OIDC client credentials and tokens transmitted in plain text.

Who is affected by CVE-2022-39339?

Users of the Nextcloud OpenID Connect user backend prior to version 1.2.1 are affected by CVE-2022-39339.

What can attackers do with CVE-2022-39339?

Attackers can intercept and compromise sensitive authentication tokens and credentials by monitoring unencrypted network traffic.

Vulnerability/
CVE-2022-39339

medium

4.3

CWE

319

25/11/2022

3/8/2024

CVE-2022-39339: Cleartext Transmission of Sensitive Information in user_oidc

First published: Fri Nov 25 2022(Updated: )

user_oidc is an OpenID Connect user backend for Nextcloud. In versions prior to 1.2.1 sensitive information such as the OIDC client credentials and tokens are sent in plain text of HTTP without TLS. Any malicious actor with access to monitor user traffic may have been able to compromise account security. This issue has been addressed in in user_oidc v1.2.1. Users are advised to upgrade. Users unable to upgrade may use https to access Nextcloud. Set an HTTPS discovery URL in the provider settings (in Nextcloud OIDC admin settings).

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
Nextcloud Openid Connect User Backend	<1.2.1

Remedy

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2vff-cq8h-chhg

Remedy

https://github.com/nextcloud/user_oidc/pull/495

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2022-39339?
CVE-2022-39339 is considered a high-severity vulnerability due to the exposure of sensitive information over unencrypted HTTP.
How do I fix CVE-2022-39339?
To mitigate CVE-2022-39339, upgrade the OpenID Connect user backend for Nextcloud to version 1.2.1 or later.
What information is leaked in CVE-2022-39339?
CVE-2022-39339 exposes sensitive OIDC client credentials and tokens transmitted in plain text.
Who is affected by CVE-2022-39339?
Users of the Nextcloud OpenID Connect user backend prior to version 1.2.1 are affected by CVE-2022-39339.
What can attackers do with CVE-2022-39339?
Attackers can intercept and compromise sensitive authentication tokens and credentials by monitoring unencrypted network traffic.

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