ruby-nokogiri: Execute Arbitrary Code/Commands -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.4100
                    USN-4175-1: Nokogiri vulnerability
                              6 November 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ruby-nokogiri
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-5477  

Reference:         ESB-2019.3854
                   ESB-2019.3628
                   ESB-2019.4048.2

Original Bulletin: 
   https://usn.ubuntu.com/4175-1/

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USN-4175-1: Nokogiri vulnerability
5 November 2019

ruby-nokogiri vulnerability
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 19.10
  o Ubuntu 19.04
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Summary

Nokogiri could be made to execute programs if it received specially crafted
input.

Software Description

  o ruby-nokogiri - HTML, XML, SAX, and Reader parser for Ruby

Details

It was discovered that Nokogiri incorrectly handled inputs. A remote attacker
could possibly use this issue to execute arbitrary OS commands.

Update instructions

The problem can be corrected by updating your system to the following package
versions:

Ubuntu 19.10
    ruby-nokogiri - 1.10.3+dfsg1-2ubuntu0.1
Ubuntu 19.04
    ruby-nokogiri - 1.10.0+dfsg1-2ubuntu0.1
Ubuntu 18.04 LTS
    ruby-nokogiri - 1.8.2-1ubuntu0.1
Ubuntu 16.04 LTS
    ruby-nokogiri - 1.6.7.2-3ubuntu0.1

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

In general, a standard system update will make all the necessary changes.

References

  o CVE-2019-5477

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