What is CVE-2023-3825?

CVE-2023-3825 is a vulnerability in PTC's KEPServerEX versions 6.0 to 6.14.263 that allows an attacker to make the server read a recursively defined object, leading to uncontrolled resource consumption.

What is the severity of CVE-2023-3825?

The severity of CVE-2023-3825 is high, with a CVSS score of 7.5.

What does PTC's KEPServerEX use to define object types?

PTC's KEPServerEX uses OPC UA, a protocol that defines various object types.

What is the impact of this vulnerability?

The vulnerability allows an attacker to cause uncontrolled resource consumption which can lead to service disruption or denial of service.

How can I fix CVE-2023-3825?

To fix CVE-2023-3825, it is recommended to update KEPServerEX to a version that is higher than 6.14.263.

Vulnerability/
CVE-2023-3825

high

7.5

CWE

787 400

EPSS

0.096%

31/7/2023

21/10/2024

CVE-2023-3825

First published: Mon Jul 31 2023(Updated: )

PTC’s KEPServerEX Versions 6.0 to 6.14.263 are vulnerable to being made to read a recursively defined object that leads to uncontrolled resource consumption. KEPServerEX uses OPC UA, a protocol which defines various object types that can be nested to create complex arrays. It does not implement a check to see if such an object is recursively defined, so an attack could send a maliciously created message that the decoder would try to decode until the stack overflowed and the device crashed.

Credit: ics-cert@hq.dhs.gov ics-cert@hq.dhs.gov

Affected Software	Affected Version	How to fix
Kepware KEPServerEX	>=6.0.0<=6.14.263
PTC KEPServerEX: Versions 6.0 to 6.14.263

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Reference Links

https://www.cisa.gov/news-events/ics-advisories/icsa-23-208-02 (Advisory)

Parent vulnerabilities

(Appears in the following advisories)

ICSA-23-208-02

Frequently Asked Questions

What is CVE-2023-3825?
CVE-2023-3825 is a vulnerability in PTC's KEPServerEX versions 6.0 to 6.14.263 that allows an attacker to make the server read a recursively defined object, leading to uncontrolled resource consumption.
What is the severity of CVE-2023-3825?
The severity of CVE-2023-3825 is high, with a CVSS score of 7.5.
What does PTC's KEPServerEX use to define object types?
PTC's KEPServerEX uses OPC UA, a protocol that defines various object types.
What is the impact of this vulnerability?
The vulnerability allows an attacker to cause uncontrolled resource consumption which can lead to service disruption or denial of service.
How can I fix CVE-2023-3825?
To fix CVE-2023-3825, it is recommended to update KEPServerEX to a version that is higher than 6.14.263.

collector/nvd-index
agent/author
agent/weakness
agent/last-modified-date
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agent/type
collector/epss-latest
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vendor/kepware
canonical/kepware kepserverex
version/kepware kepserverex/6.0.0
version/kepware kepserverex/6.14.263
vendor/ptc
canonical/ptc kepserverex: versions 6.0 to 6.14.263

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