FreeBSD : OpenSSL -- Multiple vulnerabilities in 1.1 branch (238ae7de-dba2-11e8-b713-b499baebfeaf)

Medium Nessus Plugin ID 118496

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 :

Timing vulnerability in ECDSA signature generation (CVE-2018-0735):
The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key (Low).

Timing vulnerability in DSA signature generation (CVE-2018-0734) :
Avoid a timing attack that leaks information via a side channel that triggers when a BN is resized. Increasing the size of the BNs prior to doing anything with them suppresses the attack (Low).

Solution

Update the affected packages.

See Also

https://www.openssl.org/news/secadv/20181029.txt

https://github.com/openssl/openssl/commit/8abfe72e

http://www.nessus.org/u?ca1e56e7

Plugin Details

Severity: Medium

ID: 118496

File Name: freebsd_pkg_238ae7dedba211e8b713b499baebfeaf.nasl

Version: 1.5

Type: local

Published: 2018/10/30

Updated: 2019/01/30

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: 5.9

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:libressl, p-cpe:/a:freebsd:freebsd:libressl-devel, p-cpe:/a:freebsd:freebsd:openssl-devel, p-cpe:/a:freebsd:freebsd:openssl111, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 2018/10/29

Vulnerability Publication Date: 2018/10/29

Reference Information

CVE: CVE-2018-0734, CVE-2018-0735