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

medium Nessus Plugin ID 120115

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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: 1.3

Type: local

Agent: unix

Published: 1/2/2019

Updated: 3/16/2020

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2018-0737

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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:U/RL:O/RC:C

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/1/2018

Vulnerability Publication Date: 4/16/2018

Reference Information

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