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Critical USN-3621-1 7 CVEs

ruby1.9.1, ruby2.0, ruby2.3 vulnerabilities

Published Apr 5, 2018 · Updated Apr 27, 2026

Ecosystem: Ubuntu

Summary

It was discovered that Ruby incorrectly handled certain inputs. An attacker
could possibly use this to access sensitive information. (CVE-2018-1000073)

It was discovered that Ruby incorrectly handled certain files. An attacker
could possibly use this to execute arbitrary code. (CVE-2018-1000074)

It was discovered that Ruby incorrectly handled certain files. An attacker
could possibly use this to cause a denial of service. (CVE-2018-1000075)

It was discovered that Ruby incorrectly handled certain crypto signatures.
An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000076)

It was discovered that Ruby incorrectly handled certain inputs. An attacker
could possibly use this to execute arbitrary code. (CVE-2018-1000077,
CVE-2018-1000078, CVE-2018-1000079)

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 14.04 LTS 14.04:LTS ruby1.9.1 1.9.3.484-2ubuntu1.8
Ubuntu · 14.04 LTS 14.04:LTS ruby2.0 2.0.0.484-1ubuntu2.6
Ubuntu · 16.04 LTS 16.04:LTS ruby2.3 2.3.1-2~16.04.7

Vulnerabilities 7

  • Critical 9.8
    CVE-2018-1000076

    RubyGems Improper Verification of Cryptographic Signature vulnerability

    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, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerab…

    ruby2.3 jruby ruby2.0 rubygems Debian Ubuntu Maven RubyGems
  • High 7.8
    CVE-2018-1000074

    RubyGems Deserialization of Untrusted Data vulnerability

    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, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner …

    ruby2.3 jruby ruby2.0 ruby1.9.1 Debian Ubuntu Maven RubyGems
  • High 7.5
    CVE-2018-1000073

    RubyGems Link Following vulnerability

    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, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location fun…

    ruby2.3 jruby ruby2.0 rubygems Debian Ubuntu Maven RubyGems
  • High 7.5
    CVE-2018-1000075

    RubyGems Infinite Loop vulnerability

    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, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ru…

    ruby2.3 jruby ruby2.0 ruby1.9.1 Debian Ubuntu Maven RubyGems
  • Medium 6.1
    CVE-2018-1000078

    RubyGems Cross-site Scripting vulnerability

    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, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server di…

    ruby2.3 jruby ruby2.0 ruby1.9.1 Debian Ubuntu Maven RubyGems
  • Medium 5.5
    CVE-2018-1000079

    RubyGems Path Traversal vulnerability

    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, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation tha…

    ruby2.3 jruby ruby2.0 rubygems Debian Ubuntu Maven RubyGems
  • Medium 5.3
    CVE-2018-1000077

    RubyGems Improper Input Validation vulnerability

    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, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems spec…

    ruby2.3 jruby ruby2.0 ruby1.9.1 Debian Ubuntu Maven RubyGems

References

  • report
    https://ubuntu.com/security/CVE-2018-1000073
  • report
    https://ubuntu.com/security/CVE-2018-1000074
  • report
    https://ubuntu.com/security/CVE-2018-1000075
  • report
    https://ubuntu.com/security/CVE-2018-1000076
  • report
    https://ubuntu.com/security/CVE-2018-1000077
  • report
    https://ubuntu.com/security/CVE-2018-1000078
  • report
    https://ubuntu.com/security/CVE-2018-1000079