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Debian LTS Advisory ([SECURITY] [DLA 1480-1] ruby2.1 security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Several vulnerabilities were discovered in Ruby 2.1. CVE-2016-2337 Type confusion exists in _cancel_eval Ruby's TclTkIp class method. Attacker passing different type of object than String as 'retval' argument can cause arbitrary code execution. CVE-2018-1000073 RubyGems contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. CVE-2018-1000074 RubyGems contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file.
Affected Software
Affected Software
ruby2.1 on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For Debian 8 'Jessie', these problems have been fixed in version 2.1.5-2+deb8u5. We recommend that you upgrade your ruby2.1 packages.