FreeBSD : password-store -- GPG parsing vulnerabilities (53eb9e1e-7014-11e8-8b1f-3065ec8fd3ec)

critical Nessus Plugin ID 110540

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Synopsis

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

Description

Jason A. Donenfeld reports :

Markus Brinkmann discovered that [the] parsing of gpg command line output with regexes isn't anchored to the beginning of the line, which means an attacker can generate a malicious key that simply has the verification string as part of its username.

This has a number of nasty consequences :

- an attacker who manages to write into your ~/.password-store and also inject a malicious key into your keyring can replace your .gpg-id key and have your passwords encrypted under additional keys;

- if you have extensions enabled (disabled by default), an attacker who manages to write into your ~/.password-store and also inject a malicious key into your keyring can replace your extensions and hence execute code.

Solution

Update the affected package.

Plugin Details

Severity: Critical

ID: 110540

File Name: freebsd_pkg_53eb9e1e701411e88b1f3065ec8fd3ec.nasl

Version: 1.6

Type: local

Family: FreeBSD Local Security Checks

Published: 6/15/2018

Updated: 9/20/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2018-12356

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:password-store, cpe:/o:freebsd:freebsd

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/14/2018

Vulnerability Publication Date: 6/14/2018

Reference Information

CVE: CVE-2018-12356

Detections

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