CVE-2019-8308 — Flatpak before 1

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-02-12T23:00:00.000Z
• Last modified: 2024-08-04T21:17:30.551Z

09References

• bugs.debian.org — https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=922059
• github.com — https://github.com/flatpak/flatpak/releases/tag/1.2.3
• github.com — https://github.com/flatpak/flatpak/releases/tag/1.0.7
• access.redhat.com — https://access.redhat.com/errata/RHSA-2019:0375
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00088.html