Detections
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RHEL 8 : flatpak (RHSA-2021:0304)
high Nessus Plugin ID 145704
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Synopsis
The remote Red Hat host is missing a security update for flatpak.Description
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:0304 advisory.Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.
Security Fix(es):
* flatpak: sandbox escape via spawn portal (CVE-2021-21261)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
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 RHEL flatpak package based on the guidance in RHSA-2021:0304.See Also
http://www.nessus.org/u?748f4bad
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: High
ID: 145704
File Name: redhat-RHSA-2021-0304.nasl
Version: 1.11
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 2/1/2021
Updated: 6/3/2024
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.5
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2021-21261
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 7.7
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:flatpak-session-helper, p-cpe:/a:redhat:enterprise_linux:flatpak-libs, p-cpe:/a:redhat:enterprise_linux:flatpak-selinux, p-cpe:/a:redhat:enterprise_linux:flatpak, cpe:/o:redhat:enterprise_linux:8
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: 2/1/2021
Vulnerability Publication Date: 1/14/2021
Reference Information
CVE: CVE-2021-21261