FreeBSD : OpenSSL -- NULL pointer de-reference (1d56cfc5-3970-11eb-929d-d4c9ef517024)

medium Nessus Plugin ID 143591
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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

The OpenSSL project reports :

EDIPARTYNAME NULL pointer de-reference (High)

The X.509 GeneralName type is a generic type for representing different types of names. One of those name types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a possible denial of service attack.

Solution

Update the affected package.

See Also

https://www.openssl.org/news/secadv/20201208.txt

http://www.nessus.org/u?ad00190c

Plugin Details

Severity: Medium

ID: 143591

File Name: freebsd_pkg_1d56cfc5397011eb929dd4c9ef517024.nasl

Version: 1.7

Type: local

Published: 12/9/2020

Updated: 6/3/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-1971

VPR

Risk Factor: Medium

Score: 6.1

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: E:U/RL:OF/RC:C

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:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:openssl, cpe:/o:freebsd:freebsd

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/8/2020

Vulnerability Publication Date: 12/8/2020

Reference Information

CVE: CVE-2020-1971

FreeBSD: SA-20:33.openssl

IAVA: 2020-A-0566-S