Open redirect in ZmartZone IAM mod_auth_openidc Apache module

1) Open redirect

EUVDB-ID: #VU71703

Risk: Low

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

CVE-ID: CVE-2021-39191

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. 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

mod_auth_openidc: 1.5 - 2.4.9.3

CPE2.3

• cpe:2.3:a:zmartzone:mod_auth_openidc:1.5:*:*:*:*:*:*:*
• cpe:2.3:a:zmartzone:mod_auth_openidc:1.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:zmartzone:mod_auth_openidc:1.5.2:*:*:*:*:*:*:*

External links

https://github.com/zmartzone/mod_auth_openidc/issues/672
https://github.com/zmartzone/mod_auth_openidc/commit/03e6bfb446f4e3f27c003d30d6a433e5dd8e2b3d
https://github.com/zmartzone/mod_auth_openidc/releases/tag/v2.4.9.4
https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-2pgf-8h6h-gqg2
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/32RGPW5LZDLDTB7MKZIGAHPSLFOUNWR5/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RHXO4O4G2UQS7X6OQJCVZKHZAQ7SAIFB/

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.