Detections
Analytics
RHEL 6 : bash (Unpatched Vulnerability)
high Nessus Plugin ID 196136
Synopsis
The remote Red Hat 6 host is affected by multiple vulnerabilities that will not be patched.Description
The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.- bash: BASH_CMD is writable in restricted bash shells (CVE-2019-9924)
- bash: a heap-buffer-overflow in valid_parameter_transform (CVE-2022-3715)
- An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux and other systems that support saved UID functionality, the saved UID is not dropped. An attacker with command execution in the shell can use enable -f for runtime loading of a new builtin, which can be a shared object that calls setuid() and therefore regains privileges. However, binaries running with an effective UID of 0 are unaffected.
(CVE-2019-18276)
Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.
Solution
The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation guidance.Plugin Details
Severity: High
ID: 196136
File Name: redhat_unpatched-bash-rhel6.nasl
Version: 1.0
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 5/11/2024
Updated: 5/11/2024
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.6
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: 7
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:P/RL:O/RC:C
CVSS Score Source: CVE-2022-3715
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:bash, p-cpe:/a:redhat:enterprise_linux:redhat-virtualization-host, p-cpe:/a:redhat:enterprise_linux:rhvm-appliance
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Vulnerability Publication Date: 3/22/2019