SARA / Free Tools / CVE / CVE-2019-6843

CVE-2019-6843 — A CWE-755: Improper Handling of Exceptional Conditions vulnerability exists in M

A CWE-755: Improper Handling of Exceptional Conditions vulnerability exists in Modicon M580 with firmware (version prior to V3.10), Modicon M340 (all firmware versions), and Modicon BMxCRA and 140CRA modules (all firmware versions), which could cause a Denial of Service attack on

CVSS
— —
EPSS
0.36% (top 42.00%)
CWE
CWE-755
Published
2019-10-29T14:48:04.000Z
Last modified
2024-08-04T20:31:04.371Z
CVSS vector
—

01What is this vulnerability?

A CWE-755: Improper Handling of Exceptional Conditions vulnerability exists in Modicon M580 with firmware (version prior to V3.10), Modicon M340 (all firmware versions), and Modicon BMxCRA and 140CRA modules (all firmware versions), which could cause a Denial of Service attack on the PLC when upgrading the controller with an empty firmware package using FTP protocol.

02Affected products

VendorProductVersions
na / Modicon M580, Modicon M340, and Modicon BMxCRA / 140CRA modules (see notification for version info)Modicon M580, Modicon M340, and Modicon BMxCRA / 140CRA modules (see notification for version info)

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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