CVE-2020-6111
An exploitable denial-of-service vulnerability exists in the IPv4 functionality of Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 16.000, Series B FRN 15.002, Series B FRN 15.000, Series B FRN 14.000, Series B FRN…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An exploitable denial-of-service vulnerability exists in the IPv4 functionality of Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 16.000, Series B FRN 15.002, Series B FRN 15.000, Series B FRN 14.000, Series B FRN 13.000, Series B FRN 12.000, Series B FRN 11.000 and Series B FRN 10.000. A specially crafted packet can cause a major error, resulting in a denial of service. An attacker can send a malicious packet to trigger this vulnerability.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.64% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-189
- Affected
- rockwellautomation/micrologix 1100 b firmware
- Source
- talos-cna@cisco.com
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1057Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-047-02Third Party Advisory, US Government Resource
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1057Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-047-02Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.