(PT-2018-35) Positive Technologies Security Advisory
Authorization Bypass in APC Uninterrupted Power Supplies

Vulnerable products

MGE Galaxy 3000
MGE Galaxy 4000
MGE Galaxy 5000
MGE Galaxy 6000
MGE Galaxy 9000
MGE EPS 6000
MGE EPS 7000
MGE EPS 8000
MGE Comet UPS
MGE Galaxy PW
STS (MGE Upsilon)

Link:
https://www.schneider-electric.com/

Severity level

Severity level: High
Impact: Unauthorized full access
Access Vector: Remote

CVSS v3:
Base Score: 10
Vector: (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

CVE: CVE-2018-7243

Vulnerability description

The specialists of the Positive Research center have detected an Authorization Bypass vulnerability in APC Uninterrupted Power Supplies.

Vulnerability in Schneider Electric's MGE SNMP/Web Card 66074 installed in MGE UPS and MGE STS, related to the integrated web server (Port 80/443/TCP), allows remote attackers to bypass the authorization system and obtain full access to the affected device.

How to fix

Use vendor's advisory:
https://www.schneider-electric.com/en/download/document/SEVD-2018-074-01/

Advisory status

20.02.2016 - Vendor gets vulnerability details
15.03.2018 - Vendor releases fixed version and details
18.12.2018 - Public disclosure

Credits

The vulnerability was detected by Ilya Karpov, Stephen Nosov, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2018-35
https://www.ptsecurity.com/
https://en.securitylab.ru/lab/

About Positive Technologies

Positive Technologies is a leading digital security firm with over 15 years of experience in 360° protection of critical IT systems against the most advanced cyberthreats. State-of-the-art solutions are developed at the company's research center—one of the largest in Europe. Positive Technologies experts have helped to identify and fix over 250 zero-day vulnerabilities in products from Cisco, Google, Honeywell, Huawei, Microsoft, Oracle, SAP, Schneider Electric, Siemens, and others, earning a reputation for world-class expertise in protection of devices and infrastructures at all scales from ATMs to nuclear power stations. Findings by Positive Technologies researchers are used for updating the MaxPatrol knowledge base and for development of security solutions including PT Application Firewall, PT Application Inspector, MaxPatrol. These products allow securing web applications, evaluating network protection, blocking attacks in real time, ensuring compliance with industry and national standards, and training security specialists. Positive Technologies is the organizer of the annual Positive Hack Days international forum and security competition.