Open redirect in OpenStack Horizon

1) Open redirect

EUVDB-ID: #VU49154

Risk: Low

CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-29565

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 "next" 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

Openstack Horizon: 10.0.0 - 18.5.0

External links

http://www.openwall.com/lists/oss-security/2020/12/08/2
http://bugs.launchpad.net/horizon/+bug/1865026
http://review.opendev.org/c/openstack/horizon/+/758841/
http://review.opendev.org/c/openstack/horizon/+/758843/
http://security.openstack.org/ossa/OSSA-2020-008.html

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.