CVE-2020-35685

Description

An issue was discovered in HCC Nichestack 3.0. The code that generates Initial Sequence Numbers (ISNs) for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existing ones or spoof future ones. (Proper ISN generation should aim to follow at least the specifications outlined in RFC 6528.)

Weakness classification

• nvd@nist.gov: CWE-330

Primary references

• cve@mitre.org — Mitigation, Third Party Advisory
• cve@mitre.org — Mitigation, Third Party Advisory
• cve@mitre.org — Product
• cve@mitre.org — Third Party Advisory, US Government Resource
• af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Product
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, US Government Resource