Detections
Analytics
RHEL 7 : bash (RHSA-2020:3803)
high Nessus Plugin ID 140746
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Synopsis
The remote Red Hat host is missing a security update for bash.Description
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:3803 advisory.The bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux.
Security Fix(es):
* bash: BASH_CMD is writable in restricted bash shells (CVE-2019-9924)
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 bash package based on the guidance in RHSA-2020:3803.See Also
https://access.redhat.com/errata/RHSA-2020:3803
https://access.redhat.com/security/updates/classification/#moderate
Plugin Details
Severity: High
ID: 140746
File Name: redhat-RHSA-2020-3803.nasl
Version: 1.11
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 9/23/2020
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: Medium
Score: 6.7
Vendor
Vendor Severity: Moderate
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-2019-9924
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_e4s:7.4, cpe:/o:redhat:rhel_aus:7.4, p-cpe:/a:redhat:enterprise_linux:bash, cpe:/o:redhat:rhel_tus:7.4, p-cpe:/a:redhat:enterprise_linux:bash-doc
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: 9/22/2020
Vulnerability Publication Date: 3/22/2019
Reference Information
CVE: CVE-2019-9924
BID: 109277