USN-3685-1: Ruby vulnerabilities

Releases

• Ubuntu 17.10
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• ruby1.9.1 - Object-oriented scripting language
• ruby2.0 - Object-oriented scripting language
• ruby2.3 - 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 execute arbitrary code. (CVE-2017-0903)

It was discovered that Ruby incorrectly handled certain files.
An attacker could use this to expose sensitive information.
(CVE-2017-14064)

It was discovered that Ruby incorrectly handled certain inputs.
An attacker could use this to execute arbitrary code. (CVE-2017-10784)

It was discovered that Ruby incorrectly handled certain network requests.
An attacker could possibly use this to inject a crafted key into a HTTP
response. (CVE-2017-17742)

It was discovered that Ruby incorrectly handled certain files.
An attacker could possibly use this to execute arbitrary code.
This update is only addressed to ruby2.0. (CVE-2018-1000074)

It was discovered that Ruby incorrectly handled certain network requests.
An attacker could possibly use this to cause a denial of service.
(CVE-2018-8777)

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

• libruby2.3 - 2.3.1-2~16.04.10
• ruby2.3 - 2.3.1-2~16.04.10

Ubuntu 14.04

• 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

• 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

Related notices

• USN-3439-1: libtcltk-ruby1.9.1, ruby1.9.1-dev, ri1.9.1, ruby1.9.1-full, libruby1.9.1, ruby1.9.3, ruby1.9.1, ruby1.9.1-examples
• USN-3553-1: ruby2.3-dev, ruby2.3-doc, ruby2.3-tcltk, ruby2.3, libruby2.3
• USN-3685-2: ruby2.0, ruby2.0-dev, ruby2.0-doc, libruby2.0, ruby2.0-tcltk
• USN-3528-1: ruby2.3-dev, libtcltk-ruby1.9.1, ruby2.3-doc, ruby1.9.1-dev, ri1.9.1, ruby1.9.1-full, ruby2.3-tcltk, libruby1.9.1, ruby1.9.3, ruby1.9.1, ruby2.3, libruby2.3, ruby1.9.1-examples
• USN-3621-1: ruby2.3-dev, ruby2.0, libtcltk-ruby1.9.1, ruby2.0-dev, ruby1.9.1-dev, ri1.9.1, ruby2.0-doc, libruby2.0, ruby1.9.1-full, ruby2.3-doc, ruby2.3-tcltk, libruby1.9.1, ruby1.9.3, ruby1.9.1, ruby2.3, libruby2.3, ruby1.9.1-examples, ruby2.0-tcltk
• USN-3621-2: ruby2.0, libtcltk-ruby1.9.1, ruby2.0-dev, ruby1.9.1-dev, ri1.9.1, ruby2.0-doc, libruby2.0, ruby1.9.1-full, libruby1.9.1, ruby1.9.3, ruby1.9.1, ruby1.9.1-examples, ruby2.0-tcltk