RHEL 8 : gnupg2 (RHSA-2020:4490)

high Nessus Plugin ID 142389
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 Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4490 advisory.

- gnupg2: Cross site request forgery in dirmngr resulting in an information disclosure or denial of service (CVE-2018-1000858)

- GnuPG: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS (CVE-2019-13050)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected gnupg2 and / or gnupg2-smime packages.

See Also

https://cwe.mitre.org/data/definitions/297.html

https://cwe.mitre.org/data/definitions/352.html

https://access.redhat.com/security/cve/CVE-2018-1000858

https://access.redhat.com/security/cve/CVE-2019-13050

https://access.redhat.com/errata/RHSA-2020:4490

https://bugzilla.redhat.com/1663917

https://bugzilla.redhat.com/1726146

Plugin Details

Severity: High

ID: 142389

File Name: redhat-RHSA-2020-4490.nasl

Version: 1.7

Type: local

Agent: unix

Published: 11/4/2020

Updated: 10/12/2021

Dependencies: ssh_get_info.nasl, redhat_repos.nasl

Risk Information

CVSS Score Source: CVE-2019-13050

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_aus:8.4, cpe:/o:redhat:rhel_e4s:8.4, cpe:/o:redhat:rhel_eus:8.4, cpe:/o:redhat:rhel_tus:8.4, p-cpe:/a:redhat:enterprise_linux:gnupg2, p-cpe:/a:redhat:enterprise_linux:gnupg2-smime

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/4/2020

Vulnerability Publication Date: 12/20/2018

Reference Information

CVE: CVE-2019-13050

RHSA: 2020:4490

CWE: 297, 352