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USN-3365-1: Ruby vulnerabilities

USN-3365-1: Ruby vulnerabilities

Ubuntu Security Notice USN-3365-1

25th July, 2017

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

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

Summary

Several security issues were fixed in Ruby.

Software description

Details

It was discovered that Ruby DL::dlopen incorrectly handled opening
libraries. An attacker could possibly use this issue to open libraries with
tainted names. This issue only applied to Ubuntu 14.04 LTS. (CVE-2009-5147)

Tony Arcieri, Jeffrey Walton, and Steffan Ullrich discovered that the Ruby
OpenSSL extension incorrectly handled hostname wildcard matching. This
issue only applied to Ubuntu 14.04 LTS. (CVE-2015-1855)

Christian Hofstaedtler discovered that Ruby Fiddle::Handle incorrectly
handled certain crafted strings. An attacker could use this issue to cause
a denial of service, or possibly execute arbitrary code. This issue only
applied to Ubuntu 14.04 LTS. (CVE-2015-7551)

It was discovered that Ruby Net::SMTP incorrectly handled CRLF sequences. A
remote attacker could possibly use this issue to inject SMTP commands.
(CVE-2015-9096)

Marcin Noga discovered that Ruby incorrectly handled certain arguments in
a TclTkIp class method. An attacker could possibly use this issue to
execute arbitrary code. This issue only affected Ubuntu 14.04 LTS.
(CVE-2016-2337)

It was discovered that Ruby Fiddle::Function.new incorrectly handled
certain arguments. An attacker could possibly use this issue to execute
arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2016-2339)

It was discovered that Ruby incorrectly handled the initialization vector
(IV) in GCM mode. An attacker could possibly use this issue to bypass
encryption. (CVE-2016-7798)

Update instructions

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

Ubuntu 17.04:
libruby2.3

2.3.3-1ubuntu0.1
ruby2.3

2.3.3-1ubuntu0.1
Ubuntu 16.04 LTS:
libruby2.3

2.3.1-2~16.04.2
ruby2.3

2.3.1-2~16.04.2
Ubuntu 14.04 LTS:
libruby2.0

2.0.0.484-1ubuntu2.4
ruby1.9.1

1.9.3.484-2ubuntu1.3
libruby1.9.1

1.9.3.484-2ubuntu1.3
ruby2.0

2.0.0.484-1ubuntu2.4

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2009-5147,

CVE-2015-1855,

CVE-2015-7551,

CVE-2015-9096,

CVE-2016-2337,

CVE-2016-2339,

CVE-2016-7798

Source: USN-3365-1: Ruby vulnerabilities

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