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CVE-2023-3972

HIGHCVSS 7.8/10EPSS 0.26%

Last modified

CVE-2023-3972 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

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).

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.26%

17.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
RedhatInsights-Client< 3.2.2
RedhatEnterprise Linux7.0
RedhatEnterprise Linux8.0
RedhatEnterprise Linux9.0
RedhatEnterprise Linux Aus8.6
RedhatEnterprise Linux Desktop7.0
RedhatEnterprise Linux Eus8.6
RedhatEnterprise Linux Eus8.8
RedhatEnterprise Linux Eus9.0
RedhatEnterprise Linux Eus9.2
RedhatEnterprise Linux For Arm 648.0
RedhatEnterprise Linux For Arm 64 Eus8.6
RedhatEnterprise Linux For Arm 64 Eus8.8
RedhatEnterprise Linux For Arm 64 Eus9.0
RedhatEnterprise Linux For Arm 64 Eus9.2
RedhatEnterprise Linux For Ibm Z Systems7.0
RedhatEnterprise Linux For Ibm Z Systems8.0
RedhatEnterprise Linux For Ibm Z Systems9.0
RedhatEnterprise Linux For Ibm Z Systems Eus8.6
RedhatEnterprise Linux For Ibm Z Systems Eus8.8
RedhatEnterprise Linux For Ibm Z Systems Eus9.0
RedhatEnterprise Linux For Ibm Z Systems Eus9.2
RedhatEnterprise Linux For Power Big Endian7.0
RedhatEnterprise Linux For Power Little Endian7.0
RedhatEnterprise Linux For Power Little Endian8.0
RedhatEnterprise Linux For Power Little Endian9.0
RedhatEnterprise Linux For Power Little Endian Eus8.6
RedhatEnterprise Linux For Power Little Endian Eus8.8
RedhatEnterprise Linux For Power Little Endian Eus9.2
RedhatEnterprise Linux For Scientific Computing7.0
RedhatEnterprise Linux Server7.0
RedhatEnterprise Linux Server Aus8.2
RedhatEnterprise Linux Server Aus8.4
RedhatEnterprise Linux Server Aus9.2
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.1
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.2
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.4
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.6
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.8
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions9.0
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions9.2
RedhatEnterprise Linux Server Tus8.2
RedhatEnterprise Linux Server Tus8.4
RedhatEnterprise Linux Server Tus8.6
RedhatEnterprise Linux Server Tus8.8
RedhatEnterprise Linux Server Update Services For Sap Solutions9.2
RedhatEnterprise Linux Update Services For Sap Solutions8.1
RedhatEnterprise Linux Update Services For Sap Solutions8.2
RedhatEnterprise Linux Update Services For Sap Solutions8.4
RedhatEnterprise Linux Update Services For Sap Solutions8.6

Showing 50 of 51 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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).
How severe is CVE-2023-3972?
CVE-2023-3972 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2023-3972?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-3972?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST