Detections
Analytics
RHEL 8 : zsh (RHSA-2020:0903)
high Nessus Plugin ID 134829
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Synopsis
The remote Red Hat host is missing a security update for zsh.Description
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:0903 advisory.The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more.
Security Fix(es):
* zsh: insecure dropping of privileges when unsetting PRIVILEGED option (CVE-2019-20044)
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 zsh package based on the guidance in RHSA-2020:0903.See Also
http://www.nessus.org/u?f3efc545
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: High
ID: 134829
File Name: redhat-RHSA-2020-0903.nasl
Version: 1.10
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 3/23/2020
Updated: 11/8/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
Vendor
Vendor Severity: Important
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-2019-20044
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
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:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:rhel_eus:8.1, p-cpe:/a:redhat:enterprise_linux:zsh, p-cpe:/a:redhat:enterprise_linux:zsh-html, 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: 3/19/2020
Vulnerability Publication Date: 2/24/2020
Reference Information
CVE: CVE-2019-20044