Open redirect in PostHog

1) Open redirect

EUVDB-ID: #VU98719

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-2022-0645

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 "authorize_and_redirect/?redirect=" URL. 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

PostHog: 1.0.0 - 1.34.0

CPE2.3

• cpe:2.3:a:posthog:posthog:1.0.0:*:*:*:*:*:*:
• cpe:2.3:a:posthog:posthog:1.0.1:*:*:*:*:*:*:
• cpe:2.3:a:posthog:posthog:1.0.2:*:*:*:*:*:*:

External links

http://huntr.dev/bounties/c13258a2-30e3-4261-9a3b-2f39c49a8bd6
http://github.com/posthog/posthog/commit/859d8ed9ac7c5026db09714a26c85c1458abb038

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.