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Test ID:1.3.6.1.4.1.25623.1.0.891480
Category:Debian Local Security Checks
Title:Debian LTS: Security Advisory for ruby2.1 (DLA-1480-1)
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.
Description: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/OS:
ruby2.1 on Debian Linux

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.

CVSS Score:
7.5

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2016-2337
BugTraq ID: 91233
http://www.securityfocus.com/bid/91233
https://security.gentoo.org/glsa/201710-18
http://www.talosintelligence.com/reports/TALOS-2016-0031/
https://lists.debian.org/debian-lts-announce/2018/08/msg00028.html
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