[ERPSCAN-15-012] SAP Afaria 7 XComms – Buffer Overflow

ERPSCAN Research Advisory [ERPSCAN-15-012] SAP Afaria 7 XComms – Buffer Overflow
Application: SAP Afaria 7
Versions Affected: SAP Afaria 7, probably others
Vendor URL: http://SAP.com
Bugs: Buffer Overflow
Sent: 13.03.2015
Reported: 14.03.2015
Vendor response: 14.03.2015
Date of Public Advisory: 18.05.2015
Reference: SAP Security Note 2153690
Author: Dmitry Chastukhin (ERPScan)
Description

1. ADVISORY INFORMATION
   Title: SAP Afaria 7
   Advisory ID: [ERPSCAN-15-012]
   Risk: High
   Advisory URL: http://erpscan.com/advisories/erpscan-15-012-sap-afaria-7-xcomms-bof/
   Date published: 18.05.2015
   Vendors contacted: SAP
2. VULNERABILITY INFORMATION
   Class: XML External Entity [CWE-121]
   Impact: Information disclosure, DoS
   Remotely Exploitable: Yes
   Locally Exploitable: No
   CVE Name: CVE-2015-4092
3. VULNERABILITY DESCRIPTION
   1) Buffer Overflow: A vulnerability has been discovered in certain
   landscape configurations of SAP Afaria that utilize XComms for
   client-to-server communications. XComms is only used for Android,
   Windows Mobile, and Win32 clients.
   2) Information Disclosure: An encrypted password is left in the file
   system that is not needed for server operation. (CVSS Score: 1.9,
   LMN|PNN)
   3) Denial of Service (DoS): An attacker can remotely exploit the SAP
   Afaria Package Server, rendering it, and potentially the resources
   utilized by the Afaria server, unavailable. (CVSS Score: 7.8, NLN|NNC)
4. VULNERABLE PACKAGES
   SAP Afaria 7
   Other versions are probably affected too, but they were not checked.
5. SOLUTIONS AND WORKAROUNDS
   Multiple vulnerabilities have been discovered in certain landscape
   configurations of SAP Afaria. SAP has released a security patch to
   address the vulnerabilities. SAP strongly recommends that customers
   update their landscapes.
   Patch Instructions:
   1) Download hotfix.
   SAP Afaria 7 SP5: Download Hotfix 11
   2) Apply server hotfix (SAP Security Note 2153690)
   SAP takes any security-related reports very seriously, and we will
   notify our customers as relevant new information on this topic becomes
   available. Customers may also contact SAP support by raising a
   customer incident on the component MOB-AFA.
6. AUTHOR
   Dmitry Chastukhin (ERPScan)
7. TECHNICAL DESCRIPTION
   An attacker can generate and send a special request to the server to
   exploit a buffer overflow vulnerability.
8. REPORT TIMELINE
   Sent: 13.03.2015
   Reported: 14.03.2015
   Vendor response: 14.03.2015
   Date of Public Advisory: 18.05.2015
9. REFERENCES
   http://erpscan.com/advisories/erpscan-15-012-sap-afaria-7-xcomms-bof/
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