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CVE-2018-1000076 — Vulnerability in org.jruby:jruby-stdlib — CVE...

CRITICAL

RubyGems Improper Verification of Cryptographic Signature vulnerability

Published May 14, 2022Updated March 11, 2024Source: osv

Summary

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, and Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contain an Improper Verification of Cryptographic Signature vulnerability in package.rb. This can result in a mis-signed gem being installed, as the tarball would contain multiple gem signatures. This vulnerability has been fixed in 2.7.6.

Advisory Timeline

  • First published May 14, 2022 (1612 days ago).
  • Last revised March 11, 2024 — 667 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Maven
Update org.jruby:jruby-stdlib to 9.1.16.0 or later
<!-- Update pom.xml dependency version to 9.1.16.0 for org.jruby:jruby-stdlib -->
Bundler
Update rubygems-update to 2.7.6 or later
gem install rubygems-update -v 2.7.6

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

Affected Packages (2)

Affects 2 ecosystems: maven (1), rubygems (1).

PackageEcosystemAffectedFixed In
org.jruby:jruby-stdlib
maven
1.6.0, 1.6.1, 1.6.2, 1.6.3 (+69 more)9.1.16.0
rubygems-update
rubygems
2.2.0, 2.2.1, 2.2.2, 2.2.3 (+37 more)2.7.6

Vulnerability Classification

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

  • CWE-347
    Improper Verification of Cryptographic SignatureMITRE

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

References

Frequently Asked Questions

What is CVE-2018-1000076?
RubyGems Improper Verification of Cryptographic Signature vulnerability 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-2018-1000076?
CVE-2018-1000076 affects org.jruby:jruby-stdlib and rubygems-update. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2018-1000076 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-mc6j-h948-v2p6

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