Open redirect in mod_auth_mellon



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-3639
CWE-ID CWE-601
Exploitation vector Network
Public exploit N/A
Vulnerable software
 mod_auth_mellon
Universal components / Libraries / Libraries used by multiple products

Vendor John Dennis

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Open redirect

EUVDB-ID: #VU63468

Risk: Low

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

CVE-ID: CVE-2021-3639

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 logout URLs in mod_auth_mellon. A remote attacker can create a link that leads to a trusted website, trick the victim to open it and redirect 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

mod_auth_mellon: 0.4.0 - 0.17.0

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2022:4690


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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