Improper Link Resolution and Path Traversal in tar-fs by Mafintosh
CVE-2024-12905

7.5HIGH

Key Information:

Status
Vendor
CVE Published:
27 March 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2024-12905?

The tar-fs package contains vulnerabilities that allow for improper link resolution before file access and improper limitations on pathnames during file extraction. By exploiting these flaws, an attacker can craft a malicious tar file, leading to unauthorized file writes or overwrites outside the intended extraction directory. This security issue specifically affects versions of the tar-fs package prior to 1.16.4, 2.1.2, and 3.0.8. Immediate updates to the latest versions are recommended to mitigate potential risks.

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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-2024-12905-PoC
Created by theMcSam

References

https://github.com/mafintosh/tar-fs/commit/a1dd7e7c7f4b4a...
patch
https://www.seal.security/blog/a-link-to-the-past-uncover...
technical-description

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

@bnbdr
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