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CVE Vulnerabilities

CVE-2023-3972

Creation of Temporary File in Directory with Insecure Permissions

Published: Nov 01, 2023 | Modified: Nov 21, 2024
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
7.8 IMPORTANT
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Ubuntu
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2023-3972
CWEhttps://cwe.mitre.org/data/definitions/379.html

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).

Weakness

The product creates a temporary file in a directory whose permissions allow unintended actors to determine the file’s existence or otherwise access that file.

Affected Software

NameVendorStart VersionEnd Version
Insights-clientRedhat*3.2.2 (excluding)
Red Hat Enterprise Linux 7RedHatinsights-client-0:3.1.9-1.el7_9*
Red Hat Enterprise Linux 8RedHatinsights-client-0:3.2.2-1.el8_8*
Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRedHatinsights-client-0:3.2.3-1.el8_1*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatinsights-client-0:3.2.3-1.el8_2*
Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRedHatinsights-client-0:3.2.3-1.el8_2*
Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRedHatinsights-client-0:3.2.3-1.el8_2*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatinsights-client-0:3.2.3-1.el8_4*
Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRedHatinsights-client-0:3.2.3-1.el8_4*
Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRedHatinsights-client-0:3.2.3-1.el8_4*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatinsights-client-0:3.2.2-1.el8_6*
Red Hat Enterprise Linux 9RedHatinsights-client-0:3.2.2-1.el9_2*
Red Hat Enterprise Linux 9.0 Extended Update SupportRedHatinsights-client-0:3.2.2-1.el9_0*

Potential Mitigations

References

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