CVE-2021-34807 Open redirect in n/a
An attacker with a valid token can redirect users to arbitrary URLs in Zimbra Collaboration Suite, potentially facilitating phishing attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-34807?
CVE-2021-34807 is a medium-severity vulnerability in n/a, published on 2 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0. 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 via isredirect=1&redirectURL= in conjunction with the token data (e.g., a valid authtoken= value).
Weakness: CWE-601
Which versions are affected by CVE-2021-34807?
It affects 1 product.
Products include Zimbra Collaboration.
How do I fix CVE-2021-34807?
No fix has been published for CVE-2021-34807 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-34807 being exploited?
There is no known exploitation of CVE-2021-34807 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-fqph-hqc3-qf26.