September 1, 2017 Karn Ganeshen

[ICS] SpiderControl SCADA MicroBrowser – Stack Buffer Overflow

Vendor: SpiderControl
Equipment: SCADA MicroBrowser
Vulnerability: Stack-based Buffer Overflow

ICS-CERT Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-17-234-02

ZDI Advisory
http://www.zerodayinitiative.com/advisories/ZDI-17-694/

CVE-ID
CVE-2017-12707

AFFECTED PRODUCTS
The following versions of SCADA MicroBrowser, a software management platform, are affected:

BACKGROUND

IMPACT
Successful exploitation of this vulnerability could allow an attacker to gain access to the system, manipulate system files, and potentially render the system unavailable.

VULNERABILITY OVERVIEW

STACK-BASED BUFFER OVERFLOW CWE-121

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of SpiderControl SCADA MicroBrowser. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within processing of the StaticHTMLTagsFileName tag. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute arbitrary code under the context of the current process

CVE-2017-12707 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

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