FreeBSD : OpenSSL -- multiple vulnerabilities (b7cff5a9-31cc-11e8-8f07-b499baebfeaf)

medium Nessus Plugin ID 108681

Language:

New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

The OpenSSL project reports :

- Constructed ASN.1 types with a recursive definition could exceed the stack (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 result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe.

- rsaz_1024_mul_avx2 overflow bug on x86_64 (CVE-2017-3738) There is an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. This only affects processors that support the AVX2 but not ADX extensions like Intel Haswell (4th generation).

Solution

Update the affected packages.

See Also

https://www.openssl.org/news/secadv/20180327.txt

http://www.nessus.org/u?07ae36e8

Plugin Details

Severity: Medium

ID: 108681

File Name: freebsd_pkg_b7cff5a931cc11e88f07b499baebfeaf.nasl

Version: 1.5

Type: local

Published: 3/28/2018

Updated: 11/10/2018

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: 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: 3/27/2018

Vulnerability Publication Date: 3/27/2018

Reference Information

CVE: CVE-2017-3738, CVE-2018-0739