Open redirect in Uninett mod_auth_mellon

1) Open redirect

EUVDB-ID: #VU27295

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-13038

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 passed via the "ogin?ReturnTo=" string. 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

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

mod_auth_mellon: 0.4.0 - 0.14.2

CPE2.3

• cpe:2.3:a:kasperrt:mod_auth_mellon:0.14.2:*:*:*:*:*:*:*
• cpe:2.3:a:kasperrt:mod_auth_mellon:0.14.1:*:*:*:*:*:*:*
• cpe:2.3:a:kasperrt:mod_auth_mellon:0.14.0:*:*:*:*:*:*:*

External links

http://github.com/Uninett/mod_auth_mellon/issues/35#issuecomment-503974885
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A5E3JVHURJJNDP63CKVX5O5MJAGCQV4K/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XU5GVFZW3C2M4ZBL4F7UP7N24FNUCX4E/

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.