CVE-2021-20263

Katalog CVE

CVSS 3.3 · Low EPSS 0,38%

Kerentanan Improper Preservation of Permissions pada qemu. Skor CVSS 3.1 3.3 (Low) menurut NVD.

Deskripsi (NVD)

A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new 'xattrmap' option may cause the 'security.capability' xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest.

Rincian

Terbit di NVD

9 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-281: Improper Preservation of Permissions

EPSS (30 hari)

0,38% peluang dieksploitasi; lebih tinggi dari 29,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.redhat.com/show_bug.cgi?id=1933668 issue tracking · patch · advisory pihak ketiga
• https://www.openwall.com/lists/oss-security/2021/03/08/1 mailing list · patch · advisory pihak ketiga
• https://security.gentoo.org/glsa/202208-27 advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210507-0002/ advisory pihak ketiga