FreeBSD : rubygems -- deserialization vulnerability (2c8bd00d-ada2-11e7-82af-8dbff7d75206)

critical Nessus Plugin ID 103760


New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote FreeBSD host is missing one or more security-related updates.


oss-security mailing list :

There is a possible unsafe object desrialization vulnerability in RubyGems. It is possible for YAML deserialization of gem specifications to bypass class white lists. Specially crafted serialized objects can possibly be used to escalate to remote code execution.


Update the affected packages.

See Also

Plugin Details

Severity: Critical

ID: 103760

File Name: freebsd_pkg_2c8bd00dada211e782af8dbff7d75206.nasl

Version: 3.6

Type: local

Published: 10/11/2017

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 7.5

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


Risk Factor: Critical

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:freebsd:freebsd:ruby22-gems, p-cpe:/a:freebsd:freebsd:ruby23-gems, p-cpe:/a:freebsd:freebsd:ruby24-gems, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 10/10/2017

Vulnerability Publication Date: 10/9/2017

Reference Information

CVE: CVE-2017-0903