CVE-2023-3036 HIGH

CVE-2023-3036: Out of Bounds Slice index in cfnts leads to remote panic

Vendor Cloudflare
Product cfnts
Weakness CWE-119
Published June 14, 2023
Last update January 2, 2025
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit 783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71  enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.

Key dates

02Disclosure timeline

June 14, 2023 CVE published
January 2, 2025 Record updated