Multiple vulnerabilities in PTC KEPServerEX, ThingWorx and OPC-Aggregator

Published: 2023-12-04

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-5908 CVE-2023-5909
CWE-ID	CWE-122 CWE-297
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Kepware KepServerEX Server applications / Other server solutions ThingWorx Kepware Server Server applications / Other server solutions ThingWorx Industrial Connectivity Server applications / Other server solutions ThingWorx Kepware Edge Server applications / Other server solutions OPC Aggregator Server applications / Other server solutions
Vendor	PTC

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU83635

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5908

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a boundary error. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack or leak information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Kepware KepServerEX: 6.14.263.0

ThingWorx Kepware Server: 6.14.263.0

ThingWorx Industrial Connectivity: All versions

ThingWorx Kepware Edge: 1.7

OPC Aggregator: 6.14

CPE2.3

External links

http://www.cisa.gov/news-events/ics-advisories/icsa-23-334-03
http://www.ptc.com/en/support/article/CS405439

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.

2) Improper validation of certificate with host mismatch

EUVDB-ID: #VU83637

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5909

CWE-ID: CWE-297 - Improper Validation of Certificate with Host Mismatch