SAP NetWeaver AS LSCT1I13 ABAP Hardcoded Credentials

2015-09-10T00:00:00
ID PACKETSTORM:133516
Type packetstorm
Reporter Diana Grigorieva
Modified 2015-09-10T00:00:00

Description

                                        
                                            `ERPSCAN Research Advisory [ERPSCAN-15-016] SAP NetWeaver – Hardcoded credentials  
  
  
Application: SAP NetWeaver  
Versions Affected: SAP NetWeaver AS ABAP, probably others  
Vendor URL: http://SAP.com  
Bugs: Hardcoded credentials  
Sent: 06.03.2014  
Reported: 07.03.2014  
Vendor response: 07.03.2014  
Date of Public Advisory: 15.06.2015  
Reference: SAP Security Note 2059659  
Author: Rustem Gazizov, Diana Grigorieva (ERPScan)  
  
  
Description  
  
  
1. ADVISORY INFORMATION  
Title: SAP NetWeaver AS ABAP – Hardcoded Credentials  
Advisory ID: [ERPSCAN-15-016]  
Risk: High  
Advisory URL: http://erpscan.com/advisories/erpscan-15-016-sap-netweaver-hardcoded-credentials/  
Date published: 15.06.2015  
Vendors contacted: SAP  
  
  
2. VULNERABILITY INFORMATION  
Class: hardcoded credentials [CWE-798]  
Impact: read application data; gain privileges / assume identity  
Remotely Exploitable: Yes  
Locally Exploitable: No  
  
  
CVSS Information  
CVSS Base Score: 3.6 / 10  
CVSS Base Vector:  
AV : Access Vector (Related exploit range) Network (N)  
AC : Access Complexity (Required attack complexity) High (H)  
Au : Authentication (Level of authentication needed to exploit) Single (S)  
C : Impact to Confidentiality Partial (P)  
I : Impact to Integrity Partial (P)  
A : Impact to Availability None (N)  
  
  
3. VULNERABILITY DESCRIPTION  
The program code contains a hardcoded username that changes the  
system's behavior if the user is authenticated successfully. The user  
may obtain additional information that should not be displayed.  
  
  
4. VULNERABLE PACKAGES  
SAP NetWeaver AS ABAP  
Other versions are probably affected too, but they were not checked.  
  
  
5. SOLUTIONS AND WORKAROUNDS  
To correction this vulnerability, install SAP Security Note 2059659  
  
  
6. AUTHOR  
Rustem Gazizov, Diana Grigorieva (ERPScan)  
  
  
7. TECHNICAL DESCRIPTION  
An attacker can use hardcoded credentials to get unauthorized access  
and perform various actions in the system. In addition, it is likely  
that the code will be implemented into the system as a backdoor.  
  
  
The vulnerability is in the LSCT1I13 ABAP program.  
  
  
61 * switch to adjust mode  
62 WHEN 'XADJ'.  
63 CLEAR GV_OK_CODE.  
64 CALL FUNCTION 'TOCX_GET_SYSTEM_TYPE' IMPORTING SAP_SYSTEM =  
GS_DYN300-SAP_SYSTEM EXCEPTIONS OTHERS = 1.  
65  
66 IF GS_DYN300-SAP_SYSTEM = 'X' OR SY-UNAME = 'DDIC'.  
67 IF GS_DYN300-ADJUST = ' '.  
68  
69 SELECT * FROM DD02L WHERE TABNAME = GS_DYN300-VIEW AND AS4LOCAL = 'A'.  
  
  
8. REPORT TIMELINE  
Sent: 06.03.2014  
Reported: 07.03.2014  
Vendor response: 07.03.2014  
Date of Public Advisory: 15.06.2015  
  
  
9. REFERENCES  
http://erpscan.com/advisories/erpscan-15-016-sap-netweaver-hardcoded-credentials/  
  
  
10. ABOUT ERPScan Research  
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`