#VU19622 Memory leak in CODESYS products - CVE-2019-9012

Vulnerability identifier: #VU19622

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-9012

CWE-ID: CWE-401

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
CODESYS Development System
Client/Desktop applications / Other client software
CODESYS Gateway
Client/Desktop applications / Other client software
CODESYS Control Runtime System Toolkit
Client/Desktop applications / Other client software
CODESYS Control for Raspberry Pi
Client/Desktop applications / Other client software
CODESYS Control for PFC200
Client/Desktop applications / Other client software
CODESYS Control for PFC100
Client/Desktop applications / Other client software
CODESYS Control for Linux
Client/Desktop applications / Other client software
CODESYS Control for IOT2000
Client/Desktop applications / Other client software
CODESYS Control for emPC-A/iMX6
Client/Desktop applications / Other client software
CODESYS Control for BeagleBone
Client/Desktop applications / Other client software
CODESYS firmware
Server applications / SCADA systems

Vendor: CODESYS

Description

The vulnerability allows a remote attacker to perform DoS attack.

The vulnerability exists due memory leak within the CmpGateway component when processing network traffic. A remote attacker can send specially crafted packets to the affected application and perform denial of service attack.

Mitigation
3S-Smart Software Solutions GmbH has released 3.5.14.20 and 3.5.15.0 versions to address this vulnerability.

Vulnerable software versions

CODESYS Development System: All versions

CODESYS Gateway: All versions

CODESYS Control Runtime System Toolkit: All versions

CODESYS Control for Raspberry Pi: All versions

CODESYS Control for PFC200: All versions

CODESYS Control for PFC100: All versions

CODESYS Control for Linux: All versions

CODESYS Control for IOT2000: All versions

CODESYS Control for emPC-A/iMX6: All versions

CODESYS Control for BeagleBone: All versions

CODESYS firmware: 3.5.3.0 - 3.5.14.10

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External links
https://ics-cert.us-cert.gov/advisories/icsa-19-213-03
https://www.codesys.com/fileadmin/data/customers/security/2019/Advisory2019-03_CDS-64208.pdf

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.