Zimbra Collaboration: CVE-2023-24030: URL Redirection to Untrusted Site (Open Redirect)

An open redirect vulnerability exists in the /preauth servlet in zimbra collaboration suite through 9.0 and 8.8.15. to exploit the vulnerability, an attacker would need to have obtained a valid zimbra auth token or a valid preauth token. once the token is obtained, an attacker could redirect a user to any url if url sanitisation is bypassed in incoming requests. note: this is similar, but not identical, to cve-2021-34807.