Open-Xchange Security Advisory 2014-01-06

Product: Open-Xchange AppSuite
Vendor: Open-Xchange GmbH

Internal reference: 30203 (Bug ID)
Vulnerability type: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page)
Vulnerable version: 7.4.0 and earlier
Vulnerable component: backend
Fixed version: 7.4.0-rev21, 7.4.1-rev9
Report confidence: Confirmed
Solution status: Fixed by Vendor
Vendor notification: 2013-12-06
Solution date: 2013-12-12
Public disclosure: 2014-01-06
CVE reference: CVE-2013-6997
CVSSv2: 4.1 (AV:N/AC:M/Au:N/C:P/I:N/A:N/E:F/RL:U/RC:C/CDP:ND/TD:H/CR:ND/IR:ND/AR:ND)

Vulnerability Details:
Embedding certain CSS code with wildcard characters within an HTML E-Mail can be used to modify the AppSuite web interface.

Risk:
Malicious CSS code gets applied to the default AppSuite web interface. This may be used to lure users to execute certain functions, phishing attempts or simply making the web interface dysfunctional.

Solution:
Users should update to the latest available patch releases. Users should avoid opening E-Mail attachments from untrusted sources. Users should disable rendering of the HTML content part of E-Mail.


Internal reference: 30098 (Bug ID)
Vulnerability type: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page)
Vulnerable version: 7.4.0 and earlier
Vulnerable component: office-web
Fixed version: 7.4.0-rev12, 7.4.1-rev6
Report confidence: Confirmed
Solution status: Fixed by Vendor
Vendor notification: 2013-11-29
Solution date: 2013-12-12
Public disclosure: 2014-01-06
CVE reference: CVE-2013-6997
CVSSv2: 5.7 (AV:N/AC:M/Au:N/C:P/I:N/A:N/E:POC/RL:U/RC:C/CDP:LM/TD:H/CR:ND/IR:ND/AR:ND)

Vulnerability Details:
Embedded JavaScript code within office documents gets executed when using crafted hyperlinks with script URL handlers.

Risk:
Malicious script code can be executed within a users context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). The user has to actively click a malicious hyperlink in order to trigger the script code.

Solution:
Users should update to the latest available patch releases. Users should avoid opening office documents and hyperlinks from untrusted sources.