CVE-2023-3036

Out of Bounds Slice index in cfnts leads to remote panic

Published Jun 14, 2023 CVSS 3.1 · 8.6 High EPSS 2.2% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-43728 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
cloudflare
Published
Updated
Jan 2, 2025, 7:22 PM
Reserved
Jun 1, 2023, 1:38 PM
Status
Modified
Published
Jun 14, 2023, 12:15 PM
Modified
Jun 17, 2026, 6:13 AM