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Ubuntu 16.04 LTS / 18.04 LTS : Ruby vulnerabilities (USN-4201-1)

high Nessus Plugin ID 131392

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4201-1 advisory.

 It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this issue to pass path matching what can lead to an unauthorized access. (CVE-2019-15845)

 It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could use this issue to cause a denial of service. (CVE-2019-16201)

 It was discovered that Ruby incorrectly handled certain HTTP headers. An attacker could possibly use this issue to execute arbitrary code. (CVE-2019-16254)

 It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2019-16255)

Tenable has extracted the preceding description block directly from the Ubuntu 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.

See Also

https://ubuntu.com/security/notices/USN-4201-1

Plugin Details

Severity: High

ID: 131392

File Name: ubuntu_USN-4201-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 11/27/2019

Updated: 8/29/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2019-16255

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:ruby2.3-dev, p-cpe:/a:canonical:ubuntu_linux:ruby2.5, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:ruby2.3-tcltk, p-cpe:/a:canonical:ubuntu_linux:libruby2.5, p-cpe:/a:canonical:ubuntu_linux:ruby2.5-dev, p-cpe:/a:canonical:ubuntu_linux:ruby2.3, p-cpe:/a:canonical:ubuntu_linux:libruby2.3

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: 11/26/2019

Vulnerability Publication Date: 11/26/2019

Reference Information

CVE: CVE-2019-15845, CVE-2019-16201, CVE-2019-16254, CVE-2019-16255

USN: 4201-1