Vulnerability identifier: #VU55397
Vulnerability risk: Medium
CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-601
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Zimbra Collaboration
Web applications /
Webmail solutions
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 the /preauth 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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Zimbra Collaboration: 8.8.0 - 9.0.0 Patch 15
External links
http://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
http://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23
http://wiki.zimbra.com/wiki/Security_Center
http://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16
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.