Use of Insufficiently Random Values Affecting fnet package, versions [4.6.3,]


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.15% (52nd percentile)

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  • Snyk IDSNYK-UNMANAGED-FNET-5961587
  • published12 Oct 2023
  • disclosed10 Oct 2023
  • creditUnknown

Introduced: 10 Oct 2023

CVE-2020-27633  (opens in a new tab)
CWE-330  (opens in a new tab)

How to fix?

There is no fixed version for fnet.

Overview

Affected versions of this package are vulnerable to Use of Insufficiently Random Values due to the TCP ISN generation process. An attacker can predict the sequence numbers and hijack the TCP connections by exploiting the weak randomness of the Initial Sequence Numbers (ISNs).

CVSS Scores

version 3.1