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FreeBSD : py-cryptography -- tag forgery vulnerability (9e2d0dcf-9926-11e8-a92d-0050562a4d7b)

high Nessus Plugin ID 111541

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Synopsis

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

Description

The Python Cryptographic Authority (PyCA) project reports :

finalize_with_tag() allowed tag truncation by default which can allow tag forgery in some cases. The method now enforces the min_tag_length provided to the GCM constructor

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?e7ae89d1

Plugin Details

Severity: High

ID: 111541

File Name: freebsd_pkg_9e2d0dcf992611e8a92d0050562a4d7b.nasl

Version: 1.3

Type: local

Published: 8/6/2018

Updated: 11/10/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:py27-cryptography, p-cpe:/a:freebsd:freebsd:py34-cryptography, p-cpe:/a:freebsd:freebsd:py35-cryptography, p-cpe:/a:freebsd:freebsd:py36-cryptography, p-cpe:/a:freebsd:freebsd:py37-cryptography, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 8/6/2018

Vulnerability Publication Date: 7/17/2018

Reference Information

CVE: CVE-2018-10903