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

High 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: High

ID: 119497

File Name: ubuntu_USN-3840-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/12/07

Modified: 2018/12/07

Dependencies: 12634

Risk Information

Risk Factor: High

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

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

Patch Publication Date: 2018/12/06

Reference Information

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

USN: 3840-1