PT-2012-61: XML External Entities Injection in SAP Sybase ASE

(PT-2012-61) Positive Technologies Security Advisory
XML External Entities Injection in SAP Sybase ASE

Vulnerable software

SAP Sybase ASE
Version: 15.7 ESD 2 and earlier

Link:
http://www.sybase.com/products/databasemanagement/adaptiveserverenterprise

Severity level

Severity level: Medium
Impact: File System Access 
Access Vector: Remote

CVSS v2:
Base Score: 4.0
Vector: (AV:N/AC:L/Au:S/C:P/I:N/A:N)

CVE: CVE-2013-6025

Software description

SAP Sybase ASE is a relative database management system developed by SAP.

Vulnerability description

The specialists of the Positive Research center have detected an XML External Entities Injection vulnerability in SAP Sybase ASE.

The vulnerability was detected in the xmlparse procedure in SAP Sybase ASE. Using a specially crafted SQL request, unprivileged user is able to read arbitrary files with privileges of the user that run ASE.

How to fix

Update your software up to the latest version

Advisory status

27.12.2012 - Vulnerability details were sent to CERT
10.09.2013 - Vendor releases fixed version and details
24.10.2013 - Public disclosure

Credits

The vulnerability was detected by Igor Bulatenko, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2012-61
https://service.sap.com/sap/support/notes/1887341
http://www.kb.cert.org/vuls/id/303900

Reports on the vulnerabilities previously discovered by Positive Research:

http://www.ptsecurity.com/research/advisory/
http://en.securitylab.ru/lab/

About Positive Technologies

Positive Technologies www.ptsecurity.com is among the key players in the IT security market in Russia.

The principal activities of the company include the development of integrated tools for information security monitoring (MaxPatrol); providing IT security consulting services and technical support; development of the Securitylab leading Russian information security portal.

Among the clients of Positive Technologies, there are more than 40 state enterprises, more than 50 banks and financial organizations, 20 telecommunication companies, more than 40 plant facilities, as well as IT, service and retail companies from Russia, the CIS countries, the Baltic States, China, Ecuador, Germany, Great Britain, Holland, Iran, Israel, Japan, Mexico, the Republic of South Africa, Thailand, Turkey, and the USA.

Positive Technologies is a team of highly skilled developers, advisers and experts with years of vast hands-on experience. The company specialists possess professional titles and certificates; they are the members of various international societies and are actively involved in the IT security field development.