Ubuntu 14.04 LTS / 16.04 LTS / 17.10 / 18.04 LTS : OpenSSL vulnerabilities (USN-3692-1)

high Nessus Plugin ID 110721

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Synopsis

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

Description

Keegan Ryan discovered that OpenSSL incorrectly handled ECDSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495)

Guido Vranken discovered that OpenSSL incorrectly handled very large prime values during a key agreement. A remote attacker could possibly use this issue to consume resources, leading to a denial of service.
(CVE-2018-0732)

Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia discovered that OpenSSL incorrectly handled RSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private RSA keys. (CVE-2018-0737).

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 libssl1.0.0 and / or libssl1.1 packages.

See Also

https://usn.ubuntu.com/3692-1/

Plugin Details

Severity: High

ID: 110721

File Name: ubuntu_USN-3692-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 6/27/2018

Updated: 9/17/2020

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

Risk Information

CVSS Score Source: CVE-2018-0732

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libssl1.0.0, p-cpe:/a:canonical:ubuntu_linux:libssl1.1, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:17.10, cpe:/o:canonical:ubuntu_linux:18.04:-:lts

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

Patch Publication Date: 6/26/2018

Vulnerability Publication Date: 4/16/2018

Reference Information

CVE: CVE-2018-0495, CVE-2018-0732, CVE-2018-0737

USN: 3692-1

IAVA: 2018-A-0203