Detections
Analytics
RHEL 7 : RHV-H security, bug fix, enhancement update (redhat-virtualization-host) 4.3.13 (Important) (RHSA-2021:0395)
high Nessus Plugin ID 146093
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Synopsis
The remote Red Hat host is missing one or more security updates.Description
The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0395 advisory.- dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25684)
- dnsmasq: loose query name check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25685)
- dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker (CVE-2020-25686)
- sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected redhat-virtualization-host-image-update package.See Also
https://access.redhat.com/security/cve/CVE-2020-25684
https://access.redhat.com/security/cve/CVE-2020-25685
https://access.redhat.com/security/cve/CVE-2020-25686
https://access.redhat.com/security/cve/CVE-2021-3156
https://access.redhat.com/errata/RHSA-2021:0395
https://bugzilla.redhat.com/1889686
https://bugzilla.redhat.com/1889688
Plugin Details
Severity: High
ID: 146093
File Name: redhat-RHSA-2021-0395.nasl
Version: 1.17
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 2/3/2021
Updated: 1/24/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.7
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: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:redhat-virtualization-host-image-update
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: 2/3/2021
Vulnerability Publication Date: 1/19/2021
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-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2021-3156