CVE-2023-33958

Default `maxSignatureAttempts` in `notation verify` enables an endless data attack in notation

MEDIUM
6.5
CVSS Score
Published: June 6, 2023 at 06:13 PM UTC
Updated: June 17, 2026 at 06:02 AM UTC
1 product affected across 1 vendorNotation Go

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.5%

Description

notation is a CLI tool to sign and verify OCI artifacts and container images. An attacker who has compromised a registry and added a high number of signatures to an artifact can cause denial of service of services on the machine, if a user runs notation verify command on the same machine. The problem has been fixed in the release v1.0.0-rc.6. Users should upgrade their notation packages to v1.0.0-rc.6 or above. Users unable to upgrade may restrict container registries to a set of secure and trusted container registries.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 1.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.0.0-rc.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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