Open redirect in Openstack Nova

1) Open redirect

EUVDB-ID: #VU55331

Risk: Medium

CVSSv3.1: 5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3654

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 authenticated 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 Nova: 21.0.0 - 23.0.1

External links

http://bugs.launchpad.net/nova/+bug/1927677
http://github.com/openstack/nova/commit/781612b33282ed298f742c85dab58a075c8b793e
http://bugzilla.redhat.com/show_bug.cgi?id=1961439
http://security.openstack.org/ossa/OSSA-2021-002.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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