#VU17384 Input validation error in CompactLogix 1768-EWEB and 1756-EWEB - CVE-2018-19016

Vulnerability identifier: #VU17384

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-19016

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CompactLogix 1768-EWEB
Hardware solutions / Firmware
1756-EWEB
Hardware solutions / Firmware

Vendor: Rockwell Automation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send a crafted UDP packet to the SNMP service and cause DoS condition to occur until the affected product is restarted.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CompactLogix 1768-EWEB: All versions

1756-EWEB: All versions

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External links
https://ics-cert.us-cert.gov/advisories/ICSA-19-036-02

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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 Internet.

Is there known malware, which exploits this vulnerability?

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