CVE-2021-41133

Katalog CVE

CVSS 7.8 · High EPSS 0,44%

Kerentanan Improper Input Validation pada flatpak, debian linux +1 lainnya. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.

Rincian

Terbit di NVD

8 Oktober 2021

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-20: Improper Input Validation

EPSS (30 hari)

0,44% peluang dieksploitasi; lebih tinggi dari 36,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/flatpak/flatpak/commit/1330662f33a55e88bfe18e76de28b7922d91a999 patch · advisory pihak ketiga
• https://github.com/flatpak/flatpak/commit/26b12484eb8a6219b9e7aa287b298a894b2f34ca patch · advisory pihak ketiga
• https://github.com/flatpak/flatpak/commit/462fca2c666e0cd2b60d6d2593a7216a83047aaf patch · advisory pihak ketiga
• https://github.com/flatpak/flatpak/commit/4c34815784e9ffda5733225c7d95824f96375e36 patch · advisory pihak ketiga
• https://github.com/flatpak/flatpak/commit/89ae9fe74c6d445bb1b3a40e568d77cf5de47e48 patch · advisory pihak ketiga
• https://github.com/flatpak/flatpak/commit/9766ee05b1425db397d2cf23afd24c7f6146a69f patch · advisory pihak ketiga
• https://github.com/flatpak/flatpak/commit/a10f52a7565c549612c92b8e736a6698a53db330 patch · advisory pihak ketiga
• https://github.com/flatpak/flatpak/commit/e26ac7586c392b5eb35ff4609fe232c52523b2cf patch · advisory pihak ketiga
• https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q patch · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2021/10/26/9 mailing list · advisory pihak ketiga
• https://www.debian.org/security/2021/dsa-4984 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5656ONDP2MGK...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5DKCYRC6MFST...
• https://security.gentoo.org/glsa/202312-12