Vulnerability Description
An issue was discovered in HCC Nichestack 3.0. The code that parses ICMP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the ICMP checksum. When the IP payload size is set to be smaller than the size of the IP header, the ICMP checksum computation function may read out of bounds, causing a Denial-of-Service.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hcc-Embedded | Nichestack | 3.0 |
| Siemens | 7Km9300-0Ae02-0Aa0 Firmware | < 3.0.4 |
| Siemens | 7Km9300-0Ae02-0Aa0 | - |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdfMitigationThird Party Advisory
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilitiMitigationThird Party Advisory
- https://www.hcc-embedded.comProduct
- https://www.kb.cert.org/vuls/id/608209Third Party AdvisoryUS Government Resource
- https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdfMitigationThird Party Advisory
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilitiMitigationThird Party Advisory
- https://www.hcc-embedded.comProduct
- https://www.kb.cert.org/vuls/id/608209Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2020-35683?
CVE-2020-35683 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in HCC Nichestack 3.0. The code that parses ICMP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the ICMP checksum. When t...
How severe is CVE-2020-35683?
CVE-2020-35683 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-35683?
Check the references section above for vendor advisories and patch information. Affected products include: Hcc-Embedded Nichestack, Siemens 7Km9300-0Ae02-0Aa0 Firmware, Siemens 7Km9300-0Ae02-0Aa0.