CVE-2017-9780
In Flatpak before 0.8.7, a third-party app repository could include malicious apps that contain files with inappropriate permissions, for example setuid or world-writable.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Flatpak before 0.8.7, a third-party app repository could include malicious apps that contain files with inappropriate permissions, for example setuid or world-writable. The files are deployed with those permissions, which would let a local attacker run the setuid executable or write to the world-writable location. In the case of the "system helper" component, files deployed as part of the app are owned by root, so in the worst case they could be setuid root.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.36% probability · 29th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-732
- Affected
- flatpak/flatpak · debian/debian linux
- Source
- cve@mitre.org
EPSS 0.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.debian.org/security/2017/dsa-3895Third Party Advisory
- http://www.securityfocus.com/bid/99346Third Party Advisory, VDB Entry
- https://bugs.debian.org/865413Issue Tracking, Patch, Third Party Advisory
- https://github.com/flatpak/flatpak/issues/845Issue Tracking, Patch, Third Party Advisory
- http://www.debian.org/security/2017/dsa-3895Third Party Advisory
- http://www.securityfocus.com/bid/99346Third Party Advisory, VDB Entry
- https://bugs.debian.org/865413Issue Tracking, Patch, Third Party Advisory
- https://github.com/flatpak/flatpak/issues/845Issue Tracking, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.