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Ubuntu Security Notice USN-3945-1

Ubuntu Security Notice USN-3945-1
Posted Apr 12, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3945-1 - It was discovered that Ruby incorrectly handled certain RubyGems. An attacker could possibly use this issue to execute arbitrary commands. It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code.

tags | advisory, arbitrary, ruby
systems | linux, ubuntu
advisories | CVE-2019-8320, CVE-2019-8324
MD5 | e31c0b3ee67169a56b90d68e0524ec93

Ubuntu Security Notice USN-3945-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3945-1
April 11, 2019

ruby1.9.1, ruby2.0, ruby2.3, ruby2.5 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

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)

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://usn.ubuntu.com/usn/usn-3945-1
CVE-2019-8320, CVE-2019-8321, CVE-2019-8322, CVE-2019-8323,
CVE-2019-8324, CVE-2019-8325

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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