CVE-2021-39143

Path Traversal in spinnaker

HIGH

7.1

CVSS Score

Published: January 4, 2022 at 05:25 PM UTC

Updated: June 17, 2026 at 04:03 AM UTC

2 products affected across 2 vendorsSpinnakerSpinnaker

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Severity

HIGH7.1

Exploit prediction

EPSS 0.4%

SSVC

PoC

Description

Spinnaker is an open source, multi-cloud continuous delivery platform. A path traversal vulnerability was discovered in uses of TAR files by AppEngine for deployments. This uses a utility to extract files locally for deployment without validating the paths in that deployment don't override system files. This would allow an attacker to override files on the container, POTENTIALLY introducing a MITM type attack vector by replacing libraries or injecting wrapper files. Users are advised to update as soon as possible. For users unable to update disable Google AppEngine deployments and/or disable artifacts that provide TARs.

Affected

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

Spinnaker · Linuxfoundation

95%

v < 1.24.71.25.0 ≤ v < 1.25.71.26.0 ≤ v < 1.26.7

Affected range stops below 1.24.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.25.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.26.7, so it looks safe — our inference, not a vendor statement

Spinnaker · Spinnaker

60%

v < 1.24.7v < 1.25.7v < 1.26.7

Affected range stops below 1.24.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.25.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.26.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRMExploitTechnical DescriptionThird Party Advisory

Source: [email protected]

https://github.com/spinnaker/spinnaker/security/advisories/GHSA-34jx-3vmr-56v8

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGH[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-22

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