CVE-2019-5105 — HIGH (7.5) — White Hats Nepal

Vulnerability Description

An exploitable memory corruption vulnerability exists in the Name Service Client functionality of 3S-Smart Software Solutions CODESYS GatewayService. A specially crafted packet can cause a large memcpy, resulting in an access violation and termination of the process. An attacker can send a packet to a device running the GatewayService.exe to trigger this vulnerability. All variants of the CODESYS V3 products in all versions prior V3.5.16.10 containing the CmpRouter or CmpRouterEmbedded component are affected, regardless of the CPU type or operating system: CODESYS Control for BeagleBone, CODESYS Control for emPC-A/iMX6, CODESYS Control for IOT2000, CODESYS Control for Linux, CODESYS Control for PLCnext, CODESYS Control for PFC100, CODESYS Control for PFC200, CODESYS Control for Raspberry Pi, CODESYS Control RTE V3, CODESYS Control RTE V3 (for Beckhoff CX), CODESYS Control Win V3 (also part of the CODESYS Development System setup), CODESYS Control V3 Runtime System Toolkit, CODESYS V3 Embedded Target Visu Toolkit, CODESYS V3 Remote Target Visu Toolkit, CODESYS V3 Safety SIL2, CODESYS Edge Gateway V3, CODESYS Gateway V3, CODESYS HMI V3, CODESYS OPC Server V3, CODESYS PLCHandler SDK, CODESYS V3 Simulation Runtime (part of the CODESYS Development System).

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Codesys	Codesys	3.5.13.2

Related Weaknesses (CWE)

CWE-119 CWE-787

References

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=13077&token=3bfc6d1d0
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0897ExploitThird Party Advisory
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=13077&token=3bfc6d1d0
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0897ExploitThird Party Advisory

FAQ

What is CVE-2019-5105?

CVE-2019-5105 is a vulnerability with a CVSS score of 7.5 (HIGH). An exploitable memory corruption vulnerability exists in the Name Service Client functionality of 3S-Smart Software Solutions CODESYS GatewayService. A specially crafted packet can cause a large memcp...

How severe is CVE-2019-5105?

CVE-2019-5105 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-5105?

Check the references section above for vendor advisories and patch information. Affected products include: Codesys Codesys.