CVE-2021-31228
Published: 19 August 2021
Summary
CVE-2021-31228 is a high-severity Use of Insufficiently Random Values (CWE-330) vulnerability in Hcc-Embedded Nichestack. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 47.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-18141
Vulnerability details
An issue was discovered in HCC embedded InterNiche 4.0.1. This vulnerability allows the attacker to predict a DNS query's source port in order to send forged DNS response packets that will be accepted as valid answers to the DNS client's…
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requests (without sniffing the specific request). Data is predictable because it is based on the time of day, and has too few bits.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Key generation under controlled management uses approved random-bit sources rather than insufficiently random values.