GLSA-201811-03 : OpenSSL: Denial of Service

Medium Nessus Plugin ID 118847

Synopsis

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

Description

The remote host is affected by the vulnerability described in GLSA-201811-03 (OpenSSL: Denial of Service)

It was discovered that OpenSSL allow malicious servers to send very large primes to a client during DH(E) based TLS handshakes.
Impact :

A remote attacker, by sending large prime to client during DH(E) TLS handshake, could possibly cause a Denial of Service condition.
Workaround :

There is no known workaround at this time.

Solution

All OpenSSL users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=dev-libs/openssl-1.0.2o-r6'

See Also

https://security.gentoo.org/glsa/201811-03

Plugin Details

Severity: Medium

ID: 118847

File Name: gentoo_GLSA-201811-03.nasl

Version: 1.1

Type: local

Published: 2018/11/09

Modified: 2018/11/09

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:gentoo:linux:openssl, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2018/11/09

Reference Information

CVE: CVE-2018-0732

GLSA: 201811-03