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.)
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-08-19T11:21:08

Updated: 2024-08-04T17:09:14.933Z

Reserved: 2020-12-24T00:00:00

Link: CVE-2020-35685

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-08-19T12:15:08.217

Modified: 2024-11-21T05:27:50.993

Link: CVE-2020-35685

cve-icon Redhat

No data.