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Ubuntu Security Notice USN-3685-1

Ubuntu Security Notice USN-3685-1
Posted Jun 14, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3685-1 - Some of these CVEs were already addressed in previous USN: 3439-1, 3553-1, 3528-1. It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to cause a buffer overrun. It was discovered that Ruby incorrectly handled certain files. An attacker could use this to overwrite any file on the filesystem. Various other issues were also addressed.

tags | advisory, overflow, ruby
systems | linux, ubuntu
advisories | 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
MD5 | 8e3eaae5e55f5657e198a4d0014a7723

Ubuntu Security Notice USN-3685-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3685-1
June 13, 2018

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

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

- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

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 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 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://usn.ubuntu.com/usn/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

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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