SUSE SLES15 Security Update : openssl-1_0_0 (SUSE-SU-2018:2965-1)

Medium Nessus Plugin ID 120115

Synopsis

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

Description

This update for openssl-1_0_0 to 1.0.2p fixes the following issues :

These security issues were fixed :

Prevent One&Done side-channel attack on RSA that allowed physically near attackers to use EM emanations to recover information (bsc#1104789)

CVE-2018-0737: The RSA Key generation algorithm has been shown to be vulnerable to a cache timing side channel attack. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could have recovered the private key (bsc#1089039)

CVE-2018-0732: During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server could have sent a very large prime value to the client. This caused the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack (bsc#1097158)

Make problematic ECDSA sign addition length-invariant

Add blinding to ECDSA and DSA signatures to protect against side channel attacks

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Legacy Software 15:zypper in -t patch SUSE-SLE-Module-Legacy-15-2018-2095=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1089039

https://bugzilla.suse.com/show_bug.cgi?id=1097158

https://bugzilla.suse.com/show_bug.cgi?id=1101470

https://bugzilla.suse.com/show_bug.cgi?id=1104789

https://bugzilla.suse.com/show_bug.cgi?id=1106197

https://www.suse.com/security/cve/CVE-2018-0732/

https://www.suse.com/security/cve/CVE-2018-0737/

http://www.nessus.org/u?a300071d

Plugin Details

Severity: Medium

ID: 120115

File Name: suse_SU-2018-2965-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2019/01/02

Updated: 2019/01/02

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

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

CVSS v3.0

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:novell:suse_linux:libopenssl-1_0_0-devel, p-cpe:/a:novell:suse_linux:libopenssl1_0_0, p-cpe:/a:novell:suse_linux:libopenssl1_0_0-debuginfo, p-cpe:/a:novell:suse_linux:openssl, p-cpe:/a:novell:suse_linux:openssl-1_0_0-debuginfo, p-cpe:/a:novell:suse_linux:openssl-1_0_0-debugsource, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Patch Publication Date: 2018/10/01

Reference Information

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