Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : openssl, openssl1.0 vulnerabilities (USN-3840-1)

Medium Nessus Plugin ID 119497

Synopsis

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

Description

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).

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/3840-1/

Plugin Details

Severity: Medium

ID: 119497

File Name: ubuntu_USN-3840-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2018/12/07

Modified: 2019/01/30

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

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

CVSS v3.0

Base Score: 5.9

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

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:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.10

Patch Publication Date: 2018/12/06

Vulnerability Publication Date: 2018/10/29

Reference Information

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

USN: 3840-1