(PT-2015-18) Positive Technologies Security Advisory
XML External Entity Injection in 1С:Enterprise

Vulnerable software

1С:Enterprise
Version: 8.x

Links:
http://1c-dn.com/1c_enterprise/

Severity level

Severity level: Medium
Impact: Internal Network Resources and File System Access, Denial of Service
Access Vector: Remote

CVSS v2:
Base Score: 5.8
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:P)

CVE: not assigned

Software description

1C: Enterprise is a platform designed for automation of corporate or private business processes.

Vulnerability description

The specialists of the Positive Research center have detected an XML External Entity Injection vulnerability in the 1C: Enterprise application.

This vulnerability allows an attacker to access the internal network resources, file system, and cause a denial of service attack. All XML parsers are vulnerable including wsisapi.dll library.

How to fix

Update your software up to the latest version

Advisory status

10.11.2015 - Vendor gets vulnerability details
19.11.2015 - Vendor releases fixed version and details
09.09.2016 - Public disclosure

Credits

The vulnerability was detected by Yaroslav Babin, Arseniy Sharoglazov, and Vladimir Ivanov, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2016-18

Reports on the vulnerabilities previously discovered by Positive Research:

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

About Positive Technologies

Positive Technologies is a leading provider of vulnerability assessment, compliance management and threat analysis solutions to more than 1,000 global enterprise clients. Our solutions work seamlessly across your entire business: securing applications in development; assessing your network and application vulnerabilities; assuring compliance with regulatory requirements; and blocking real-time attacks. Our commitment to clients and research has earned Positive Technologies a reputation as one of the foremost authorities on SCADA, Banking, Telecom, Web Application and ERP security, and distinction as the #1 fastest growing Security and Vulnerability Management firm in 2012, as shown in an IDC report*. To learn more about Positive Technologies please visit www.ptsecurity.com

*Source: IDC Worldwide Security and Vulnerability Management 2013-2017 Forecast and 2012 Vendor Shares, doc #242465, August 2013. Based on year-over-year revenue growth in 2012 for vendors with revenues of $20M+