Home / vulnerabilities SAP NetWeaver Portal 7.31 XXE Injection
Posted on 19 June 2015
Source : packetstormsecurity.org Link
ERPSCAN Research Advisory [ERPSCAN-15-006] SAP NetWeaver Portal
ReportXmlViewer - XXE
Application: SAP NetWeaver Portal 7.31
Versions Affected: SAP NetWeaver Portal 7.31, probably others
Vendor URL: http://SAP.com
Bugs: XXE
Sent: 09.12.2014
Reported: 09.12.2014
Vendor response: 10.12.2014
Date of Public Advisory: 18.06.2015
Reference: SAP Security Note 2111939
Author: Vahagn Vardanyan (ERPScan)
Description
1. ADVISORY INFORMATION
Title: SAP NetWeaver Portal ReportXmlViewer - XXE
Advisory ID: [ERPSCAN-15-006]
Risk: High
Advisory URL:
http://erpscan.com/advisories/erpscan-15-006-sap-netweaver-portal-reportxmlviewer-xxe/
Date published: 15.03.2015
Vendors contacted: SAP
2. VULNERABILITY INFORMATION
Class: XXE [CWE-122]
Impact: XML external entity, information disclosure, denial of service,
role upload, thread reporting
Remotely Exploitable: Yes
Locally Exploitable: No
CVE Name: CVE-2015-2811
3. VULNERABILITY DESCRIPTION
By default, the parser opens external entities referenced within an XML
input, which can then lead to malicious content being parsed.
This malicious content can reference internal resources, such as files.
These internal resources can be disclosed in the response to the
request, or can be used to perform a denial of service attack on the
parsing system, rendering the application content temporarily unavailable.
4. VULNERABLE PACKAGES
SAP NetWeaver Portal 7.31
Other versions are probably affected too, but they were not checked.
5. SOLUTIONS AND WORKAROUNDS
To correct this vulnerability, install SAP Security Note 2111939.
6. AUTHOR
Vahagn Vardanyan (ERPScan)
7. TECHNICAL DESCRIPTION
SAP XML parser validates all incoming XML requests with a user-specified
DTD.
8. REPORT TIMELINE
Sent: 09.12.2014
Reported: 09.12.2014
Vendor response: 10.12.2014
Date of Public Advisory: 18.06.2015
9. REFERENCES
http://erpscan.com/advisories/erpscan-15-006-sap-netweaver-portal-reportxmlviewer-xxe/
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