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Ubuntu: 3685-1 Critical: Ruby Exploits and Risk Resolutions

ubuntu
Calendar Grey June 14, 2018
Dist Ubuntu Esm H88
Ubuntu releases have bolstered Ruby security by addressing various vulnerabilities, safeguarding users against possible threats.
Several security issues were fixed in Ruby.

Summary

Several security issues were fixed in Ruby.

Software Description:

- ruby2.3: Object-oriented scripting language

- ruby1.9.1: Object-oriented scripting language

- ruby2.0: Object-oriented scripting language

Details:

Some of these CVE were already addressed in previous

USN: 3439-1, 3553-1, 3528-1. Here we address for

the remain releases.

It was discovered that Ruby incorrectly handled certain inputs.

An attacker could use this to cause a buffer overrun. (CVE-2017-0898)

It was discovered that Ruby incorrectly handled certain files.

An attacker could use this to overwrite any file on the filesystem.

(CVE-2017-0901)

It was discovered that Ruby was vulnerable to a DNS hijacking

vulnerability. An attacker could use this to possibly force the

RubyGems client to download and install gems from a server that the

attacker controls.  (CVE-2017-0902)

It was discovered that Ruby incorrectly handled certain YAML files.

An attacker could use this to possibly exec...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory buffer overflow code execution ubuntu ruby exploits dns hijacking

Update Instructions

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

Ubuntu 17.10:
  libruby2.3                      2.3.3-1ubuntu1.6
  ruby2.3                         2.3.3-1ubuntu1.6

Ubuntu 16.04 LTS:
  libruby2.3                      2.3.1-2~16.04.10
  ruby2.3                         2.3.1-2~16.04.10

Ubuntu 14.04 LTS:
  libruby1.9.1                    1.9.3.484-2ubuntu1.12
  libruby2.0                      2.0.0.484-1ubuntu2.10
  ruby1.9.1                       1.9.3.484-2ubuntu1.12
  ruby1.9.3                       1.9.3.484-2ubuntu1.12
  ruby2.0                         2.0.0.484-1ubuntu2.10

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

References

  https://ubuntu.com/security/notices/USN-3685-1

  CVE-2017-0898, CVE-2017-0901, CVE-2017-0902, CVE-2017-0903,

  CVE-2017-10784, CVE-2017-14064, CVE-2017-17742, CVE-2018-1000074,

  CVE-2018-8777

Severity
critical
Lowest
Low
Medium
High
Critical

June 13, 2018

Topics%20covered

Topics Covered

security advisory buffer overflow code execution ubuntu ruby exploits dns hijacking

Package Information

  https://launchpad.net/ubuntu/+source/ruby2.3/2.3.3-1ubuntu1.6
  https://launchpad.net/ubuntu/+source/ruby2.3/2.3.1-2~16.04.10
  https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.484-2ubuntu1.12
  https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484-1ubuntu2.10

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