Bug 1465025 (CVE-2017-9780) - CVE-2017-9780 flatpak: Privilege escalation via setuid/world-writable file permissions
Summary: CVE-2017-9780 flatpak: Privilege escalation via setuid/world-writable file pe...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-9780
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1465027
Blocks: 1465028
TreeView+ depends on / blocked
 
Reported: 2017-06-26 12:49 UTC by Andrej Nemec
Modified: 2021-02-17 01:59 UTC (History)
2 users (show)

Fixed In Version: flatpak 0.8.7, flatpak 0.9.6
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Last Closed: 2017-06-27 01:00:00 UTC
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Description Andrej Nemec 2017-06-26 12:49:47 UTC 
A vulnerability was found in Flatpak. 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.

Upstream issue:

https://github.com/flatpak/flatpak/issues/845
Comment 1 Andrej Nemec 2017-06-26 12:50:01 UTC 
Acknowledgments:

Name: Colin Walters (Red Hat)
Comment 2 Andrej Nemec 2017-06-26 12:50:17 UTC 
Created flatpak tracking bugs for this issue:

Affects: fedora-24 [bug 1465027]
Comment 3 Andrej Nemec 2017-06-26 12:52:15 UTC 
References:

http://seclists.org/oss-sec/2017/q2/569
Comment 4 Doran Moppert 2017-06-27 01:00:00 UTC 
Upstream commit for 0.8.7 branch:

https://github.com/flatpak/flatpak/commit/2c8e2417de

This is already included in flatpak-0.8.7-1.el7
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