high7.5
CVE-2021-31401
An issue was discovered in tcp_rcv() in nptcp.c in HCC embedded InterNiche 4.0.1.
Impact
An issue was discovered in tcp_rcv() in nptcp.c in HCC embedded InterNiche 4.0.1. The TCP header processing code doesn't sanitize the value of the IP total length field (header length + data length). With a crafted IP packet, an integer overflow occurs whenever the value of the IP data length is calculated by subtracting the length of the header from the total length of the IP packet.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Hcc-Embedded | Nichestack | before 4.3 |
| Siemens | Sentron 3wl Com35 Firmware | before 1.2.0 |
| Siemens | Sentron 3wa Com190 Firmware | before 2.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- 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.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.kb.cert.org/vuls/id/608209