CVE-2020-5291

Katalog CVE

CVSS 7.8 · High EPSS 0,90%

Kerentanan Incorrect Use of Privileged APIs pada projectatomic bubblewrap, debian linux +2 lainnya. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

Bubblewrap (bwrap) before version 0.4.1, if installed in setuid mode and the kernel supports unprivileged user namespaces, then the `bwrap --userns2` option can be used to make the setuid process keep running as root while being traceable. This can in turn be used to gain root permissions. Note that this only affects the combination of bubblewrap in setuid mode (which is typically used when unprivileged user namespaces are not supported) and the support of unprivileged user namespaces. Known to be affected are: * Debian testing/unstable, if unprivileged user namespaces enabled (not default) * Debian buster-backports, if unprivileged user namespaces enabled (not default) * Arch if using `linux-hardened`, if unprivileged user namespaces enabled (not default) * Centos 7 flatpak COPR, if unprivileged user namespaces enabled (not default) This has been fixed in the 0.4.1 release, and all affected users should update.

Rincian

Terbit di NVD

31 Maret 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-648: Incorrect Use of Privileged APIs
CWE-269: Improper Privilege Management

EPSS (30 hari)

0,90% peluang dieksploitasi; lebih tinggi dari 58,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240 patch · advisory pihak ketiga
• https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj mitigasi · advisory pihak ketiga