OWASP AntiSamy CVE-2017-14735 Cross Site Scripting Vulnerability

Description

OWASP AntiSamy is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may let the attacker steal cookie-based authentication credentials and launch other attacks. Versions prior to OWASP AntiSamy prior to1.5.7 are vulnerable.

Technologies Affected

• Antisamy Project Antisamy 1.4.4
• Antisamy Project Antisamy 1.5.1
• Antisamy Project Antisamy 1.5.3
• Antisamy Project Antisamy 1.5.4
• Antisamy Project Antisamy 1.5.6
• Oracle Agile PLM 9.3.4
• Oracle Agile PLM 9.3.5
• Oracle Application Testing Suite 12.5.0.3
• Oracle Application Testing Suite 13.1.0.1
• Oracle Application Testing Suite 13.2.0.1
• Oracle Application Testing Suite 13.3.0.1
• Oracle Banking Platform 2.5.0
• Oracle Banking Platform 2.6
• Oracle Banking Platform 2.6.1
• Oracle FLEXCUBE Core Banking 11.6.0
• Oracle FLEXCUBE Core Banking 11.7.0
• Oracle FLEXCUBE Core Banking 11.8.0
• Oracle FLEXCUBE Core Banking 5.2.0
• Oracle Fusion Middleware MapViewer 12.1.3.0
• Oracle Fusion Middleware MapViewer 12.2.1.3.0
• Oracle Insurance Calculation Engine 10.0
• Oracle Insurance Calculation Engine 10.1
• Oracle Insurance Calculation Engine 10.2
• Oracle Insurance Calculation Engine 9.7
• Oracle Insurance Policy Administration J2EE 10.0
• Oracle Insurance Policy Administration J2EE 10.2
• Oracle Retail Back Office 13.3
• Oracle Retail Back Office 13.4
• Oracle Retail Back Office 14.0
• Oracle Retail Back Office 14.1
• Oracle Retail Central Office 13.3
• Oracle Retail Central Office 13.4
• Oracle Retail Central Office 14.0
• Oracle Retail Central Office 14.1
• Oracle Retail Returns Management 13.3
• Oracle Retail Returns Management 13.4
• Oracle Retail Returns Management 14.0
• Oracle Retail Returns Management 14.1
• Oracle WebCenter Sites 11.1.1.8.0

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn’t needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
Attackers may successfully exploit client flaws in the browser through cross-site scripting vulnerabilities. When possible, run client software as regular user accounts with limited access to system resources. This may limit the immediate consequences of client-side vulnerabilities.

Do not follow links provided by unknown or untrusted sources.
Web users should be cautious about following links to websites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.

Set web browser security to disable the execution of script code or active content.
Since exploiting cross-site scripting issues often requires malicious script code to run in browsers, consider disabling script code and active content support within a client browser as a way to prevent a successful exploit. Note that this mitigation tactic might adversely affect legitimate sites that rely on the execution of browser-based script code.

Updates are available. Please see the references or vendor advisory for more information.