CVE-2025-0377

High

Published: 21 January 2025

Published

21 January 2025

Modified

15 December 2025

KEV Added

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Patch

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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Score 0.0047 64.5th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-0377 is a high-severity Link Following (CWE-59) vulnerability in Hashicorp Go-Slug. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 35.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-2 Flaw Remediation good match

prevent

Directly remediates the path traversal flaw in HashiCorp's go-slug library by identifying, reporting, and applying vendor-provided patches or updates.

SI-10 Information Input Validation good match

prevent

Validates user-provided paths from tar entries to ensure they do not contain traversal sequences like '../', preventing extraction outside intended directories.

AC-6 Least Privilege partial match

prevent

Enforces least privilege on processes performing tar extraction, limiting the ability to access or disclose sensitive files even if path traversal occurs.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1005 Data from Local System Collection

Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.

attack.mitre.org →

Why these techniques?

Remote path traversal in archive extraction directly enables T1190 for unauthenticated network exploitation and facilitates T1005 by allowing arbitrary sensitive file reads on the local system.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

HashiCorp’s go-slug library is vulnerable to a zip-slip style attack when a non-existing user-provided path is extracted from the tar entry.

Deeper analysisAI

CVE-2025-0377 is a path traversal vulnerability (CWE-59) in HashiCorp's go-slug library, enabling a zip-slip style attack during tar archive extraction. The flaw arises when a non-existing user-provided path in a tar entry is processed, allowing traversal outside intended directories. Published on 2025-01-21, it carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), indicating high severity primarily due to confidentiality risks.

Remote, unauthenticated attackers can exploit this vulnerability over the network with low complexity and no user interaction. By supplying a malicious tar archive, they can traverse paths to access sensitive files, achieving high-impact unauthorized disclosure of information without altering integrity or availability.

HashiCorp's security advisory (HCSEC-2025-01) provides details on the issue and mitigation at https://discuss.hashicorp.com/t/hcsec-2025-01-hashicorp-go-slug-vulnerable-to-zip-slip-attack.