Notation vulnerable to denial of service from high number of artifact signatures

CVE-2023-33957 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

An attacker who controls or compromises a registry can make the registry serve an infinite number of signatures for the artifact, causing a denial of service to the host machine running notation verify.

Patches

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.

Workarounds

User should use secure and trusted container registries.

Credits

The notation project would like to thank Adam Korczynski (@AdamKorcz) for responsibly disclosing the issue found during an security audit (facilitated by OSTIF and sponsored by CNCF) and Shiwei Zhang (@shizhMSFT) for root cause analysis.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2023-06-06 16:43:01 UTC
Updated
2024-03-01 15:18:49 UTC
GitHub reviewed
2023-06-06 16:43:01 UTC
NVD published
2023-06-06

EPSS Score

Score Percentile
0.06% 19.14%

CVSS Scores

Base score Version Severity Vector
5.7 3.1 —
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

Type Value
GHSA GHSA-9m3v-v4r5-ppx7 ↗
CVE CVE-2023-33957 ↗

CWEs

CWE id Name
CWE-400 Uncontrolled Resource Consumption

Credits

  • AdamKorcz (reporter)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
go github.com/notaryproject/notation < 1.0.0-rc.6 1.0.0-rc.6 —

References

cvelogic Threat Intelligence