Vulnerability in Red Hat Enterprise Linux 6
CVE-2023-3972
A vulnerability was found in insights-client. This security issue occurs because of insecure file operations or unsafe handling of temporary files and directories that lead to local privilege escalation. Before the insights-client has been registered on the system by root, an unprivileged local user or attacker could create the /var/tmp/insights-client directory (owning the directory with read, write, and execute permissions) on the system. After the insights-client is registered by root, an attacker could then control the directory content that insights are using by putting malicious scripts into it and executing arbitrary code as root (trivially bypassing SELinux protections because insights processes are allowed to disable SELinux system-wide).
EPSS: 0.003 (18.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7 — versions 0:3.1.9-1.el7_9
- Red Hat Enterprise Linux 8 — versions 0:3.2.2-1.el8_8
- Red Hat Enterprise Linux 8.1 Update Services For Sap Solutions — versions 0:3.2.3-1.el8_1
- Red Hat Enterprise Linux 8.2 Advanced Update Support — versions 0:3.2.3-1.el8_2
- Red Hat Enterprise Linux 8.2 Telecommunications Update Service — versions 0:3.2.3-1.el8_2
- Red Hat Enterprise Linux 8.2 Update Services For Sap Solutions — versions 0:3.2.3-1.el8_2
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support — versions 0:3.2.3-1.el8_4
- Red Hat Enterprise Linux 8.4 Telecommunications Update Service — versions 0:3.2.3-1.el8_4
- Red Hat Enterprise Linux 8.4 Update Services For Sap Solutions — versions 0:3.2.3-1.el8_4
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-3972?
- CVE-2023-3972 is a high-severity vulnerability in Red Hat Enterprise Linux 6, classified under Creation of Temporary File in Directory with Insecure Permissions. CVSS score: 7.8/10. Published 2023-11-01.
- How severe is CVE-2023-3972?
- High severity. CVSS v3 base score is 7.8 out of 10.