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Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : OpenSSL vulnerabilities (USN-3840-1)

medium Nessus Plugin ID 119497

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Synopsis

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

Description

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3840-1 advisory.

 Samuel Weiser discovered that OpenSSL incorrectly handled DSA signing. An attacker could possibly use this issue to perform a timing side-channel attack and recover private DSA keys. (CVE-2018-0734)

 Samuel Weiser discovered that OpenSSL incorrectly handled ECDSA signing. An attacker could possibly use this issue to perform a timing side-channel attack and recover private ECDSA keys. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-0735)

 Billy Bob Brumley, Cesar Pereida Garcia, Sohaib ul Hassan, Nicola Tuveri, and Alejandro Cabrera Aldaya discovered that Simultaneous Multithreading (SMT) architectures are vulnerable to side-channel leakage.
 This issue is known as PortSmash. An attacker could possibly use this issue to perform a timing side- channel attack and recover private keys. (CVE-2018-5407)

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-3840-1

Plugin Details

Severity: Medium

ID: 119497

File Name: ubuntu_USN-3840-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 12/7/2018

Updated: 8/27/2024

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: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2018-0735

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libssl1.1, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libcrypto1.0.0-udeb, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:openssl, p-cpe:/a:canonical:ubuntu_linux:libssl1.0.0-udeb, p-cpe:/a:canonical:ubuntu_linux:libssl1.0.0, p-cpe:/a:canonical:ubuntu_linux:openssl1.0, p-cpe:/a:canonical:ubuntu_linux:libcrypto1.1-udeb, p-cpe:/a:canonical:ubuntu_linux:libssl-dev, p-cpe:/a:canonical:ubuntu_linux:libssl1.0-dev, p-cpe:/a:canonical:ubuntu_linux:libssl1.1-udeb

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: 12/6/2018

Vulnerability Publication Date: 10/29/2018

Reference Information

CVE: CVE-2018-0734, CVE-2018-0735, CVE-2018-5407

USN: 3840-1