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AUSCERT External Security Bulletin Redistribution
ESB-2018.0067
Ruby patched in Ubuntu
5 January 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Ruby
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-17405
Reference: ESB-2017.3205
Original Bulletin:
http://www.ubuntu.com/usn/usn-3515-1
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Ubuntu Security Notice USN-3515-1
January 04, 2018
ruby1.9.1, ruby2.0, ruby2.3 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.10
- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
Ruby could be made to execute arbitrary commands if opened a specially
crafted file.
Software Description:
- - ruby2.3: Interpreter of object-oriented scripting language Ruby
- - ruby1.9.1: Object-oriented scripting language
- - ruby2.0: Object-oriented scripting language
Details:
It was discovered that Ruby allows FTP command injection.
An attacker could use this to cause arbitrary command execution.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.10:
 libruby2.3                      2.3.3-1ubuntu1.1
 ruby2.3                         2.3.3-1ubuntu1.1
Ubuntu 17.04:
 libruby2.3                      2.3.3-1ubuntu0.3
 ruby2.3                         2.3.3-1ubuntu0.3
Ubuntu 16.04 LTS:
 libruby2.3                      2.3.1-2~16.04.4
 ruby2.3                         2.3.1-2~16.04.4
Ubuntu 14.04 LTS:
 libruby1.9.1                    1.9.3.484-2ubuntu1.6
 libruby2.0                      2.0.0.484-1ubuntu2.5
 ruby1.9.1                       1.9.3.484-2ubuntu1.6
 ruby1.9.3                       1.9.3.484-2ubuntu1.6
 ruby2.0                         2.0.0.484-1ubuntu2.5
In general, a standard system update will make all the necessary
changes.
References:
 https://www.ubuntu.com/usn/usn-3515-1
 CVE-2017-17405
Package Information:
 https://launchpad.net/ubuntu/+source/ruby2.3/2.3.3-1ubuntu1.1
 https://launchpad.net/ubuntu/+source/ruby2.3/2.3.3-1ubuntu0.3
 https://launchpad.net/ubuntu/+source/ruby2.3/2.3.1-2~16.04.4
 https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.484-2ubuntu1.6
 https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484-1ubuntu2.5
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===========================================================================
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