[ERPSCAN-17-016] SAP NetWeaver AS Java 7.4 DataArchivingService servlet XSS

Application: SAP NetWeaver AS JAVA
Versions Affected: SAP NetWeaver AS JAVA 7.4
Vendor URL: SAP
Bugs: XXS
Reported: 04.12.2015
Vendor response: 05.12.2015
Date of Public Advisory: 11.04.2017
Reference: SAP Security Note 2308535
Author: Vahagn Vardanyan (ERPScan)

VULNERABILITY INFORMATION

Class: XSS
Impact: XSS on SAP NetWeaver Portal 7.4
Remotely Exploitable: yes
Locally Exploitable: no
CVE Name: CVE-2017-11460

CVSS Information

CVSS v3 Base Score: 6.1 / 10
CVSS v3 Base Vector:

AV: Attack Vector (Related exploit range) Network (N)
AC: Attack Complexity (Required attack complexity) Low (L)
PR: Privileges Required (Level of privileges needed to exploit) None (N)
UI: User Interaction (Required user participation) Required (R)
S: Scope (Change in scope due to impact caused to components beyond the vulnerable component) Changed (C)
C: Impact to Confidentiality Low (L)
I: Impact to Integrity Low (L)
A: Impact to Availability None (N)

Description

An anonymous attacker can use a special HTTP request to hijack session data of administrators or users of the web resource.

Business risk

An attacker can use a Cross-Site Scripting vulnerability for injecting a malicious script into a page. The malicious script can access all cookies, session tokens, and other critical information stored by a browser and used for interaction with a web application. An attacker can gain access to the user session and learn business critical information, in some cases, it is possible to get control over this information. In addition, XSS can be used for unauthorized modifying of displayed content.

VULNERABLE PACKAGES

SAP NetWeaver 7.4

Other versions are probably affected too, but they were not checked.

SOLUTIONS AND WORKAROUNDS

To correct this vulnerability, install SAP Security Note 2308535

TECHNICAL DESCRIPTION

XSS on SAP NetWeaver 7.4

Proof of Concept