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FreeBSD : FreeBSD -- OpenSSL Remote DoS vulnerability (0fcd3af0-a0fe-11e6-b1cf-14dae9d210b8)

high Nessus Plugin ID 94492

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Due to improper handling of alert packets, OpenSSL would consume an excessive amount of CPU time processing undefined alert messages.
Impact : A remote attacker who can initiate handshakes with an OpenSSL based server can cause the server to consume a lot of computation power with very little bandwidth usage, and may be able to use this technique in a leveraged Denial of Service attack.

Solution

Update the affected packages.

See Also

https://seclists.org/oss-sec/2016/q4/224

http://www.nessus.org/u?783a1c1b

Plugin Details

Severity: High

ID: 94492

File Name: freebsd_pkg_0fcd3af0a0fe11e6b1cf14dae9d210b8.nasl

Version: 2.7

Type: local

Published: 11/3/2016

Updated: 1/4/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

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:freebsd:freebsd:linux-c6-openssl, p-cpe:/a:freebsd:freebsd:linux-c7-openssl-libs, p-cpe:/a:freebsd:freebsd:openssl, p-cpe:/a:freebsd:freebsd:openssl-devel, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 11/2/2016

Vulnerability Publication Date: 11/2/2016

Reference Information

CVE: CVE-2016-8610

FreeBSD: SA-16:35.openssl