CVE-2023-0386 is a critical privilege escalation vulnerability in the Linux kernel's OverlayFS subsystem, affecting Canonical, Debian, Linux, and NetApp products. This flaw allows a local user to gain root privileges by exploiting a uid mapping bug when copying a capable file from a nosuid mount. With a CVSS score of 7.8 (High), the vulnerability is easily exploitable with low attack complexity and no user interaction, leading to complete compromise of confidentiality, integrity, and availability. This CVE is actively exploited in the wild, has a Metasploit module available, and has garnered significant community discussion and media coverage, indicating its widespread impact and urgency.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
CVE-2023-0386
May 9, 2023A 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.
Mar 22, 2023A 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.
Mar 14, 2023kernel: FUSE filesystem low-privileged user privileges escalation
Jan 24, 2023