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CVE-2023-0386 — Local privilege escalation exploit for CVE-2023-0386 targeting Linux kernel OverlayFS uid mapping bug. Compile and run to escalate from unprivileged user to root. | Kitploit
Tools/GitHubGitHub/puckiestyle/cve-2023-0386
Privilege EscalationVulnerability AnalysisExploitationBinary Exploitation
GitHubpuckiestyle/cve-2023-0386

CVE-2023-0386

Local privilege escalation exploit for CVE-2023-0386 targeting Linux kernel OverlayFS uid mapping bug. Compile and run to escalate from unprivileged user to root.

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19142 years agoReviewed by Kitploit

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A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.

see : https://ubuntu.com/security/CVE-2023-0386

Compile

root@kitploit:~
make all

Use

Start two terminals and enter in the first terminal

root@kitploit:~
./fuse ./ovlcap/lower ./gc

In the second terminal enter

root@kitploit:~
./exp

Effect

Privilege escalation

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