Detections
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RHEL 6 : sudo (RHSA-2021:0227)
high Nessus Plugin ID 145536
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Synopsis
The remote Red Hat host is missing a security update for sudo.Description
The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:0227 advisory.The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
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 sudo package based on the guidance in RHSA-2021:0227.See Also
http://www.nessus.org/u?c447c13e
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/RHSB-2021-002
Plugin Details
Severity: High
ID: 145536
File Name: redhat-RHSA-2021-0227.nasl
Version: 1.16
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 1/28/2021
Updated: 11/7/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.7
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 6.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2021-3156
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:sudo-devel, p-cpe:/a:redhat:enterprise_linux:sudo, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:rhel_els:6
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 1/26/2021
Vulnerability Publication Date: 1/25/2021
CISA Known Exploited Vulnerability Due Dates: 4/27/2022
Exploitable With
CANVAS (CANVAS)
Core Impact
Metasploit (Sudo Heap-Based Buffer Overflow)
Reference Information
CVE: CVE-2021-3156