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Date: Wed, 30 Jan 2019 09:42:56 +0100
From: Sysdream Labs <>
Subject: [CVE-2018-14013] Reflected Cross-Site Scripting (XSS) vulnerabilities
 in Zimbra Collaboration

# [CVE-2018-14013] Reflected Cross-Site Scripting (XSS) vulnerabilities
in Zimbra Collaboration

## Description

Two XSS vulnerabilities have been discovered in Zimbra Collaboration
(initially in version 8.8.8).
Zimbra Collaboration is an open source messaging and collaboration solution.

## Vulnerability records

**Access Vector**: Remote

**Security Risk**: Medium

**Vulnerability**: CWE-79

**CVSS Base Score**: 6.1

**CVSS String**: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

## Details

Two Reflected XSS vulnerabilities allow remote attackers to inject
arbitrary JavaScript in web browsers.

### Proof of Concept - XSS\#1

To reproduce the first XSS, login to and click
on the link below:


### Proof of Concept - XSS\#2

1. First, login to ``

2. Click on "Preferences", then on "Import / Export".

3. Finally, just import a file named `test.<svg onload=alert(2)>` to get
the second XSS payload executed.

## Affected versions

Versions < 8.8.11.

## Solution

Update to version 8.8.11 which includes all fixes.

## Timeline (dd/mm/yyyy)

* 12/07/2018  : Initial discovery
* 21/07/2018  : Vendor notification
* 21/07/2018  : Vendor acknowledgment
* 18/10/2018  : Vendor partial fixes in ZCS 8.8.10 patch 1 and 8.8.9
patch 6 (XSS 1)
* 18/12/2018  : Vendor full fixes in ZCS 8.8.11 (XSS 2)
* 30/01/2019    : Public disclosure

## Credits

* Issam Rabhi <>

Thanks to the Zimbra security team for the perfect report handling !


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* Website:
* Twitter: @sysdream

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