Arbitrary File Write Vulnerability in GitHub Actions
CVE-2024-42471

7.3HIGH

Key Information:

Vendor

Actions

Status
Toolkit
Vendor
CVE Published:
2 September 2024

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2024-42471?

The GitHub ToolKit for developing GitHub Actions contains a vulnerability that allows arbitrary file writes when using methods like downloadArtifactInternal, downloadArtifactPublic, or streamExtractExternal. Specifically, this vulnerability arises when processing specially crafted artifacts that contain path traversal filenames. Users of actions/artifact versions before 2.1.7 should upgrade to mitigate potential security risks, as no workarounds exist to address this issue.

Affected Version(s)

toolkit >= 2.0.0, < 2.1.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2024-42471-PoC
Created by theMcSam

References

https://github.com/actions/toolkit/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/actions/toolkit/pull/1666
x_refsource_MISC
https://snyk.io/research/zip-slip-vulnerability
x_refsource_MISC

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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