Home/CVE/In NetBSD through 9.2, there is an information leak in the TCP ISN (ISS) generation algorithm.
CVE

CVE-2021-45488

In NetBSD through 9.2, there is an information leak in the TCP ISN (ISS) generation algorithm.

In NetBSD through 9.2, there is an information leak in the TCP ISN (ISS) generation algorithm.

HIGH · CVSS 7.5 EPSS 0.00322
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-330Use of Insufficiently Random Values
▤

Affected Products & Versions

1
netbsd<= 9.2
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD25 Dec 2021 · 02:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2021-001.txt.ascPatchVendor Advisory
https://arxiv.org/pdf/2112.09604.pdfTechnical DescriptionThird Party Advisory
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