Open redirect in Nextcloud User Saml



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-22400
CWE-ID CWE-601
Exploitation vector Network
Public exploit N/A
Vulnerable software
 User Saml
Web applications / Modules and components for CMS

Vendor Nextcloud

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Open redirect

EUVDB-ID: #VU85587

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-22400

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in user_saml within the RelayState parameter. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

User Saml: 5.0.0 - 6.0.0

CPE2.3 External links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-622q-xhfr-xmv7
https://github.com/nextcloud/user_saml/pull/788
https://github.com/nextcloud/user_saml/commit/b184304a476deeba36e92b70562d5de7c2f85f8a
https://hackerone.com/reports/2263044


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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