#VU55395 Open redirect in Zimbra Collaboration - CVE-2021-35209

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Main Vulnerability Database Vulnerabilities #VU55395

#VU55395 Open redirect in Zimbra Collaboration - CVE-2021-35209

Published: July 28, 2021


Vulnerability identifier: #VU55395
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-35209
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Zimbra Collaboration
Software vendor:
Synacor Inc.

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in ProxyServlet.java in the /proxy servlet. 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.


Remediation

Install updates from vendor's website.

External links