Debian DLA-1480-1 : ruby2.1 security update

High Nessus Plugin ID 112167


The remote Debian host is missing a security update.


Several vulnerabilities were discovered in Ruby 2.1.


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.


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.


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.

For Debian 8 'Jessie', these problems have been fixed in version

We recommend that you upgrade your ruby2.1 packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: High

ID: 112167

File Name: debian_DLA-1480.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2018/08/29

Modified: 2018/08/31

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libruby2.1, p-cpe:/a:debian:debian_linux:ruby2.1, p-cpe:/a:debian:debian_linux:ruby2.1-dev, p-cpe:/a:debian:debian_linux:ruby2.1-doc, p-cpe:/a:debian:debian_linux:ruby2.1-tcltk, cpe:/o:debian:debian_linux:8.0

Patch Publication Date: 2018/08/27

Reference Information

CVE: CVE-2016-2337, CVE-2018-1000073, CVE-2018-1000074