CVE-2018-7838: modicon modicon m580 cpu - bmep582040 all versions before v2.90 and modicon ethernet module bmenoc0301 all versions before v2.16

Vulnerability summary

CVE-2018-7838 is a high (CVSS 7.8) vulnerability in modicon modicon m580 cpu - bmep582040 all versions before v2.90 and modicon ethernet module bmenoc0301 all versions before v2.16. EPSS estimates a 1.12% chance of exploitation in the next 30 days, higher than 65.7% of scored vulnerabilities.

Timeline

1. 15-07-2019
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

A CWE-119 Buffer Errors vulnerability exists in Modicon M580 CPU - BMEP582040, all versions before V2.90, and Modicon Ethernet Module BMENOC0301, all versions before V2.16, which could cause denial of service on the FTP service of the controller or the Ethernet BMENOC module when it receives a FTP CWD command with a data length greater than 1020 bytes. A power cycle is then needed to reactivate the FTP service.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.