CVE-2022-39339 Cleartext Transmission of Sensitive Information in user_oidc
Attackers monitoring network traffic can steal OIDC credentials and tokens due to cleartext transmission, potentially compromising user accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-39339?
CVE-2022-39339 is a medium-severity vulnerability in nextcloud security-advisories, published on 25 Nov 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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).
Weakness: CWE-319
Which versions are affected by CVE-2022-39339?
It affects 1 product.
Products include Nextcloud Openid Connect User Backend.
How do I fix CVE-2022-39339?
No fix has been published for CVE-2022-39339 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-39339 being exploited?
There is no known exploitation of CVE-2022-39339 in the wild and no public exploit code.
Other vulnerabilities in nextcloud security-advisories
Sources
Also known as GHSA-2vff-cq8h-chhg.