Zero-Day Advisory
Fortinet Discovers Zimbra Collaboration Warning Dialog Cross-Site Scripting Vulnerability
Summary
Fortinet's FortiGuard Labs has discovered a Cross-Site Scripting (XSS) vulnerability in Zimbra Collaboration.
Zimbra Collaboration is an open, secure collaboration software suite for email, address book, calendar, file-sharing and tasks. According to its website, there are over 500 million people who are using Zimbra Collaboration and come from 135+ countries. Zimbra Collaboration is used by 500+ service providers, 1000+ government & financial institutions and 200k+ businesses. They include global brands such as NTT Communications, Comcast, Dell, Cadbury, Investec, Rackspace, Red Hat, VMware, H&R Block and Vodafone.
A XSS vulnerability has been discovered in Zimbra Collaboration. The vulnerability is caused due to insufficiently sanitizing warning dialog content. It allows remote attackers to launch XSS attack against Zimbra Collaboration users.
Solutions
FortiGuard Labs released the following FortiGate IPS signature which covers this specific vulnerability:Zimbra.Warning.Dialog.XSS
Released Oct 08, 2015
Acknowledgement
This vulnerability was discovered by Zhouyuan Yang of Fortinet's FortiGuard Labs.