CVE-2026-33945

Katalog CVE

CVSS 9.6 · Critical EPSS 0,53%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada linuxcontainers incus. Skor CVSS 3.1 9.6 (Critical) menurut NVD.

Deskripsi (NVD)

Incus is a system container and virtual machine manager. Incus instances have an option to provide credentials to systemd in the guest. For containers, this is handled through a shared directory. Prior to version 6.23.0, an attacker can set a configuration key named something like `systemd.credential.../../../../../../root/.bashrc` to cause Incus to write outside of the `credentials` directory associated with the container. This makes use of the fact that the Incus syntax for such credentials is `systemd.credential.XYZ` where `XYZ` can itself contain more periods. While it's not possible to read any data this way, it's possible to write to arbitrary files as root, enabling both privilege escalation and denial of service attacks. Version 6.23.0 fixes the issue.

Rincian

Terbit di NVD

27 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.6 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

EPSS (30 hari)

0,53% peluang dieksploitasi; lebih tinggi dari 43,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/lxc/incus/security/advisories/GHSA-q4q8-7f2j-9h9f advisory vendor