PT-2018-1861 · Rockwell Automation · Rslinx Classic

Alessandro Di Pinto + 1 · Published 2018-09-20 · Updated 2019-10-09 · CVE-2018-14821

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Rockwell Automation RSLinx Classic versions 4.00.01 and prior

Description The issue is related to a buffer overflow in memory. It may allow a remote attacker to cause a denial of service by sending a specially crafted CIP packet to port 44818. This can cause the RSLinx Classic application to terminate, requiring a manual restart to regain functionality.

Recommendations For versions 4.00.01 and prior, manually restart the software after a termination to regain functionality. As a temporary workaround, consider restricting access to port 44818 to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Heap Based Buffer Overflow

Weakness Enumeration

CWE-119

CWE-122

Related Identifiers

BDU:2018-01463

CVE-2018-14821

Affected Products

Rslinx Classic

References · 8

• 🔥 https://tenable.com/security/research/tra-2018-26 · Exploit
• https://osv.dev/vulnerability/CVE-2018-14821 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-14821 · Security Note
• https://bdu.fstec.ru/vul/2018-01463 · Security Note
• https://ics-cert.us-cert.gov/advisories/ICSA-18-263-02 · Note
• https://securitylab.ru/news/495668.php · Note
• https://cxsecurity.com/cveshow/CVE-2018-3943 · Note
• https://threatpost.ru/rockwell-releases-new-patches-for-rslinx-classic/28368 · Note