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

Medium Nessus Plugin ID 108681

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 4.4

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: 2018/03/28

Updated: 2018/11/10

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 4.4

CVSS v2.0

Base Score: 4.3

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

CVSS v3.0

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: 2018/03/27

Vulnerability Publication Date: 2018/03/27

Reference Information

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