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Fencer Intel
high 8.2

CVE-2019-8308 json

Flatpak before 1.0.7, and 1.1.x and 1.2.x before 1.2.3, exposes /proc in the apply_extra script sandbox, which allows attackers to modify a…

published 7y ago modified 4mo ago also EUVD-2019-17706

cvss
8.2
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

Flatpak before 1.0.7, and 1.1.x and 1.2.x before 1.2.3, exposes /proc in the apply_extra script sandbox, which allows attackers to modify a host-side executable file.

Patch / fix

  • flatpak flatpak 1.0.7
  • flatpak Debian 14, Debian 13, Debian 12 1.2.3-1

debian advisories DEBIAN-CVE-2019-8308

  • flatpak Ubuntu 18.04 LTS 1.0.7-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2019-8308

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • flatpak RHEL 7 1.0.2-4.el7_6
  • flatpak-libs RHEL 7 1.0.2-4.el7_6
  • flatpak-builder RHEL 7 1.0.0-4.el7_6

red hat advisories RHSA-2019:0375

  • flatpak SLE Module for Desktop Applications 15 0.10.4-4.10.1

suse advisories SUSE-SU-2019:2185-1

  • flatpak openSUSE Leap 15.0 0.10.4-lp150.8.1

opensuse advisories openSUSE-SU-2019:2038-1

Is CVE-2019-8308 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-8308 updated cvss 7.7

flatpak: potential /proc based sandbox escape

  • Red Hat Enterprise Linux Client (v. 7) flatpak 1.0.2-4.el7_6, flatpak-libs 1.0.2-4.el7_6 Red Hat Enterprise Linux Client Optional (v. 7) flatpak-builder 1.0.0-4.el7_6 Red Hat Enterprise Linux ComputeNode Optional (v. 7) flatpak 1.0.2-4.el7_6, flatpak-libs 1.0.2-4.el7_6, flatpak-builder 1.0.0-4.el7_6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) flatpak 1.0.2-4.el7_6, flatpak-libs 1.0.2-4.el7_6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) flatpak-builder 1.0.0-4.el7_6 Red Hat Enterprise Linux Server (v. 7) flatpak 1.0.2-4.el7_6, flatpak-libs 1.0.2-4.el7_6
    +3 more products
    Red Hat Enterprise Linux Server Optional (v. 7) flatpak-builder 1.0.0-4.el7_6 Red Hat Enterprise Linux Workstation (v. 7) flatpak 1.0.2-4.el7_6, flatpak-libs 1.0.2-4.el7_6 Red Hat Enterprise Linux Workstation Optional (v. 7) flatpak-builder 1.0.0-4.el7_6
    fixed: vendor fix RHSA-2019:0375
  • Red Hat Enterprise Linux 8 flatpak, flatpak-libs, flatpak-selinux, flatpak-session-helper
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.2 CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
NVD 2.0 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-668 Exposure of Resource to Wrong Sphere

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.