Vulnerability Details : CVE-2021-31401
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.
Vulnerability category: OverflowInput validation
Products affected by CVE-2021-31401
- cpe:2.3:o:siemens:sentron_3wl_com35_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:sentron_3wa_com190_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:hcc-embedded:nichestack:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31401
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 52 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31401
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-31401
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31401
-
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/
New Critical Operational Technology Vulnerabilities Found on NicheStack – Mitigation Advised - ForescoutMitigation;Third Party Advisory
-
https://www.kb.cert.org/vuls/id/608209
VU#608209 - NicheStack embedded TCP/IP has vulnerabilitiesThird Party Advisory;US Government Resource
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