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CVE-2018-1000544 — Vulnerability in rubyzip — CVE Details

CRITICAL

Rubyzip gem contains a Directory Traversal vulnerability in zip file component

Published September 6, 2018Updated February 16, 2024Source: osv

Summary

rubyzip gem rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site allows uploading of .zip files , an attacker can upload a malicious file that contains symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem.. This is similar to CVE-2017-5946 which was patched in 1.2.1 but the fix in that case was incomplete.

Advisory Timeline

  • First published September 6, 2018 (2958 days ago).
  • Last revised February 16, 2024 — 1989 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update rubyzip to 1.2.2 or later
gem install rubyzip -v 1.2.2

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

PackageEcosystemAffectedFixed In
rubyzip
rubygems
0.5.11, 0.5.12, 0.5.7, 0.5.8 (+20 more)1.2.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

References

Frequently Asked Questions

What is CVE-2018-1000544?
Rubyzip gem contains a Directory Traversal vulnerability in zip file component This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2018-1000544?
CVE-2018-1000544 affects rubyzip. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2018-1000544 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-vqcq-mrmw-mcmg

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  • CVE-2017-5946
    CRITICAL

    Directory traversal vulnerability in RubyZip

  • CVE-2026-77602
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    OpenC3 COSMOS: Authenticated remote code execution via the user-writable config overlay (table definitions, cmd/tlm definitions, and script suites)

  • CVE-2026-85396
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    rubyzip path traversal vulnerability

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