An issue was discovered in HCC Nichestack 3.0. The code that parses TCP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the length of the TCP payload within the TCP checksum computation function. When the IP payload size is set to be smaller than the size of the IP header, the TCP checksum computation function may read out of bounds (a low-impact write-out-of-bounds is also possible).
References
Link | Resource |
---|---|
https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdf | Mitigation Third Party Advisory |
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ | Mitigation Third Party Advisory |
https://www.hcc-embedded.com | Product |
https://www.kb.cert.org/vuls/id/608209 | Third Party Advisory US Government Resource |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-08-19T11:19:01
Updated: 2021-08-19T11:19:27
Reserved: 2020-12-24T00:00:00
Link: CVE-2020-35684
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-08-19T12:15:08.020
Modified: 2021-08-26T18:21:10.807
Link: CVE-2020-35684
JSON object: View
Redhat Information
No data.
CWE