Nextcloud User SAML App Uncontrolled Redirect (5.1.4)
CVE-2024-22400 Published on January 18, 2024
Open redirect in user_saml via RelayState parameter in Nextcloud User Saml
Nextcloud User Saml is an app for authenticating Nextcloud users using SAML. In affected versions users can be given a link to the Nextcloud server and end up on a uncontrolled thirdparty server. It is recommended that the User Saml app is upgraded to version 5.1.5, 5.2.5, or 6.0.1. There are no known workarounds for this issue.
Vulnerability Analysis
CVE-2024-22400 is exploitable with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is an Open Redirect Vulnerability?
A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. An http parameter may contain a URL value and could cause the web application to redirect the request to the specified URL. By modifying the URL value to a malicious site, an attacker may successfully launch a phishing scam and steal user credentials. Because the server name in the modified link is identical to the original site, phishing attempts have a more trustworthy appearance.
CVE-2024-22400 has been classified to as an Open Redirect vulnerability or weakness.
Products Associated with CVE-2024-22400
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Affected Versions
nextcloud security-advisories:- Version >= 5.0.0, < 5.1.5 is affected.
- Version >= 5.2.0, < 5.2.5 is affected.
- Version >= 6.0.0, < 6.0.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.