bugtraq - Cross-Site Scripting vulnerability in Zimbra Collaboration Suite due to the way it handles attachment links

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Message-ID: <9edb13f3-456f-8c34-cb0f-2dc80c74d8a8@securify.nl>
Date: Sat, 24 Mar 2018 12:51:25 +0100
From: "Securify B.V." <lists@...urify.nl>
To: bugtraq@...urityfocus.com
Subject: Cross-Site Scripting vulnerability in Zimbra Collaboration Suite due
 to the way it handles attachment links

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Cross-Site Scripting vulnerability in Zimbra Collaboration Suite due to
the way it handles attachment links
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Stephan Kaag, January 2018

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Abstract
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A Cross-Site Scripting (XSS) vulnerability was found in Zimbra
Collaboration Suite (ZCS). This issue allows an attacker to perform a
wide variety of actions such as performing arbitrary actions on their
behalf or presenting a fake login screen to collect usernames and
passwords. In order to exploit this issue, the attacker has to lure a
victim into opening a specially crafted email in ZCS.

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See also
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- CVE-2018-6882
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7
- https://bugzilla.zimbra.com/show_bug.cgi?id=108786
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

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Tested versions
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This issue was successfully tested on ZCS 8.7.11_GA_1854 (build
20170531151956). It is however likely that this issue is present in all
versions of ZCS from version 8.5.0 on.

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Fix
------------------------------------------------------------------------
The issue is fixed in Zimbra Collaboration Suite version 8.8.7.

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Details
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https://www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-collaboration-suite-due-to-the-way-it-handles-attachment-links.html