Remote code execution in Delta Electronics Delta Industrial Automation COMMGR

1) Stack-based buffer overflow

EUVDB-ID: #VU13419

Risk: High

CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2018-10594

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The vulnerability exists due to stack-based buffer overflow when the application utilizes a fixed-length stack buffer where an unverified length value can be read from the network packets via a specific network port. A remote unauthenticated attacker can trigger memory corruption and cause the service to crash or execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update to version 1.09.

Vulnerable software versions

COMMGR AHSIM_5x1: before 1.09

COMMGR AHSIM_5x0: before 1.09

COMMGR DVPSimulator SS2: before 1.09

COMMGR DVPSimulator SE: before 1.09

COMMGR DVPSimulator ES2: before 1.09

COMMGR DVPSimulator EH3: before 1.09

COMMGR DVPSimulator EH2: before 1.09

External links

http://ics-cert.us-cert.gov/advisories/ICSA-18-172-01

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.