Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : Ruby vulnerabilities (USN-3685-1)

critical Nessus Plugin ID 110551
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.

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Some of these CVE were already addressed in previous USN: 3439-1, 3553-1, 3528-1. Here we address for the remain releases.

It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to cause a buffer overrun. (CVE-2017-0898)

It was discovered that Ruby incorrectly handled certain files. An attacker could use this to overwrite any file on the filesystem.
(CVE-2017-0901)

It was discovered that Ruby was vulnerable to a DNS hijacking vulnerability. An attacker could use this to possibly force the RubyGems client to download and install gems from a server that the attacker controls. (CVE-2017-0902)

It was discovered that Ruby incorrectly handled certain YAML files. An attacker could use this to possibly execute arbitrary code.
(CVE-2017-0903)

It was discovered that Ruby incorrectly handled certain files. An attacker could use this to expose sensitive information.
(CVE-2017-14064)

It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to execute arbitrary code. (CVE-2017-10784)

It was discovered that Ruby incorrectly handled certain network requests. An attacker could possibly use this to inject a crafted key into a HTTP response. (CVE-2017-17742)

It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code. This update is only addressed to ruby2.0. (CVE-2018-1000074)

It was discovered that Ruby incorrectly handled certain network requests. An attacker could possibly use this to cause a denial of service. (CVE-2018-8777).

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

Solution

Update the affected packages.

See Also

https://usn.ubuntu.com/3685-1/

Plugin Details

Severity: Critical

ID: 110551

File Name: ubuntu_USN-3685-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 6/15/2018

Updated: 9/17/2020

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

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

Temporal Vector: E:POC/RL:OF/RC:C

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: E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libruby1.9.1, p-cpe:/a:canonical:ubuntu_linux:libruby2.0, p-cpe:/a:canonical:ubuntu_linux:libruby2.3, p-cpe:/a:canonical:ubuntu_linux:ruby1.9.1, p-cpe:/a:canonical:ubuntu_linux:ruby1.9.3, p-cpe:/a:canonical:ubuntu_linux:ruby2.0, p-cpe:/a:canonical:ubuntu_linux:ruby2.3, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:17.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/13/2018

Vulnerability Publication Date: 8/31/2017

Reference Information

CVE: CVE-2017-0898, CVE-2017-0901, CVE-2017-0902, CVE-2017-0903, CVE-2017-10784, CVE-2017-14064, CVE-2017-17742, CVE-2018-1000074, CVE-2018-8777

USN: 3685-1