Vulnerability Details CVE-2020-35683
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 66.5%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdf
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
- https://www.hcc-embedded.com
- https://www.kb.cert.org/vuls/id/608209
- https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdf
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
- https://www.hcc-embedded.com
- https://www.kb.cert.org/vuls/id/608209
Products affected by CVE-2020-35683
-
cpe:2.3:a:hcc-embedded:nichestack:3.0
-
cpe:2.3:h:siemens:7km9300-0ae02-0aa0:-
-
cpe:2.3:o:siemens:7km9300-0ae02-0aa0_firmware:*