SUSE SLED12 Security Update : compat-openssl098 (SUSE-SU-2018:2683-1)

Medium Nessus Plugin ID 117450

Synopsis

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

Description

This update for compat-openssl098 fixes the following security issues :

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)

Blinding enhancements for ECDSA and DSA (bsc#1097624, bsc#1098592)

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-2018-0739: Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could have resulted in DoS (bsc#1087102).

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 Server for SAP 12-SP3:zypper in -t patch SUSE-SLE-SAP-12-SP3-2018-1872=1

SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-1872=1

SUSE Linux Enterprise Server for SAP 12-SP1:zypper in -t patch SUSE-SLE-SAP-12-SP1-2018-1872=1

SUSE Linux Enterprise Module for Legacy Software 12:zypper in -t patch SUSE-SLE-Module-Legacy-12-2018-1872=1

SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2018-1872=1

See Also

https://bugzilla.suse.com/1087102

https://bugzilla.suse.com/1089039

https://bugzilla.suse.com/1097158

https://bugzilla.suse.com/1097624

https://bugzilla.suse.com/1098592

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

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

https://www.suse.com/security/cve/CVE-2018-0739.html

http://www.nessus.org/u?9de46e9e

Plugin Details

Severity: Medium

ID: 117450

File Name: suse_SU-2018-2683-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/09/12

Modified: 2018/09/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 5

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

CVSSv3

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:compat-openssl098-debugsource, p-cpe:/a:novell:suse_linux:libopenssl0_9_8, p-cpe:/a:novell:suse_linux:libopenssl0_9_8-debuginfo, cpe:/o:novell:suse_linux:12

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

Patch Publication Date: 2018/09/10

Reference Information

CVE: CVE-2018-0732, CVE-2018-0737, CVE-2018-0739