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Ubuntu 18.04 LTS USN-3945-1: Ruby Command Execution Threat

ubuntu
Calendar Grey April 11, 2019
Dist Ubuntu Esm H88
Security patches are available for Ruby vulnerabilities affecting various Ubuntu versions. These flaws pose risks, so users should promptly update their systems to enhance security
Several security issues were fixed in Ruby.

Summary

Several security issues were fixed in Ruby.

Software Description:

- ruby2.5: Interpreter of object-oriented scripting language Ruby

- ruby2.3: Object-oriented scripting language

- ruby1.9.1: Object-oriented scripting language

- ruby2.0: Object-oriented scripting language

Details:

It was discovered that Ruby incorrectly handled certain RubyGems.

An attacker could possibly use this issue to execute arbitrary

commands. (CVE-2019-8320)

It was discovered that Ruby incorrectly handled certain inputs.

An attacker could possibly use this issue to execute arbitrary code.

(CVE-2019-8321, CVE-2019-8322, CVE-2019-8323, CVE-2019-8324, CVE-2019-8325)

Topics%20covered

Topics Covered

security advisory command execution ubuntu ruby execution risk

Update Instructions

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

Ubuntu 18.10:
  libruby2.5                      2.5.1-5ubuntu4.3
  ruby2.5                         2.5.1-5ubuntu4.3

Ubuntu 18.04 LTS:
  libruby2.5                      2.5.1-1ubuntu1.2
  ruby2.5                         2.5.1-1ubuntu1.2

Ubuntu 16.04 LTS:
  libruby2.3                      2.3.1-2~16.04.12
  ruby2.3                         2.3.1-2~16.04.12

Ubuntu 14.04 LTS:
  libruby1.9.1                    1.9.3.484-2ubuntu1.14
  libruby2.0                      2.0.0.484-1ubuntu2.13
  ruby1.9.1                       1.9.3.484-2ubuntu1.14
  ruby1.9.3                       1.9.3.484-2ubuntu1.14
  ruby2.0                         2.0.0.484-1ubuntu2.13

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

References

  https://ubuntu.com/security/notices/USN-3945-1

  CVE-2019-8320, CVE-2019-8321, CVE-2019-8322, CVE-2019-8323,

  CVE-2019-8324, CVE-2019-8325

Severity
important
Lowest
Low
Medium
High
Critical

April 11, 2019

Topics%20covered

Topics Covered

security advisory command execution ubuntu ruby execution risk

Package Information

  https://launchpad.net/ubuntu/+source/ruby2.5/2.5.1-5ubuntu4.3
  https://launchpad.net/ubuntu/+source/ruby2.5/2.5.1-1ubuntu1.2
  https://launchpad.net/ubuntu/+source/ruby2.3/2.3.1-2~16.04.12
  https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.484-2ubuntu1.14
  https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484-1ubuntu2.13

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