RHEL 6 / 7 : rh-ruby24-ruby (RHSA-2017:3485)

critical Nessus Plugin ID 194088

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:3485 advisory.

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

The following packages have been upgraded to a later upstream version: rh-ruby24-ruby (2.4.2).
(BZ#1506785)

Security Fix(es):

* A buffer underflow was found in ruby's sprintf function. An attacker, with ability to control its format string parameter, could send a specially crafted string that would disclose heap memory or crash the interpreter. (CVE-2017-0898)

* It was found that rubygems did not sanitize gem names during installation of a given gem. A specially crafted gem could use this flaw to install files outside of the regular directory. (CVE-2017-0901)

* A vulnerability was found where rubygems did not sanitize DNS responses when requesting the hostname of the rubygems server for a domain, via a _rubygems._tcp DNS SRV query. An attacker with the ability to manipulate DNS responses could direct the gem command towards a different domain. (CVE-2017-0902)

* A vulnerability was found where the rubygems module was vulnerable to an unsafe YAML deserialization when inspecting a gem. Applications inspecting gem files without installing them can be tricked to execute arbitrary code in the context of the ruby interpreter. (CVE-2017-0903)

* It was found that WEBrick did not sanitize all its log messages. If logs were printed in a terminal, an attacker could interact with the terminal via the use of escape sequences. (CVE-2017-10784)

* A vulnerability was found where rubygems did not properly sanitize gems' specification text. A specially crafted gem could interact with the terminal via the use of escape sequences. (CVE-2017-0899)

* It was found that rubygems could use an excessive amount of CPU while parsing a sufficiently long gem summary. A specially crafted gem from a gem repository could freeze gem commands attempting to parse its summary. (CVE-2017-0900)

* A buffer overflow vulnerability was found in the JSON extension of ruby. An attacker with the ability to pass a specially crafted JSON input to the extension could use this flaw to expose the interpreter's heap memory. (CVE-2017-14064)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 194088

File Name: redhat-RHSA-2017-3485.nasl

Version: 1.1

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 4/27/2024

Updated: 4/15/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

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

CVSS Score Source: CVE-2017-10784

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2017-14064

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-net-telnet, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-ruby-devel, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-ruby-libs, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-json, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-openssl, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygems-devel, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-power_assert, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-ruby-doc, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-rdoc, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-psych, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygems, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-io-console, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-ruby-irb, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-bigdecimal, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-rake, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-ruby, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-did_you_mean, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-test-unit, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-minitest, p-cpe:/a:redhat:enterprise_linux:rh-ruby24-rubygem-xmlrpc

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/19/2017

Vulnerability Publication Date: 8/31/2017

Reference Information

CVE: CVE-2017-0898, CVE-2017-0899, CVE-2017-0900, CVE-2017-0901, CVE-2017-0902, CVE-2017-0903, CVE-2017-10784, CVE-2017-14064

CWE: 117, 122, 138, 20, 200

RHSA: 2017:3485

Detections

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