[Webkit-unassigned] [Bug 143004] New: [Seccomp] Web process has too much access to /run/user

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Mar 24 07:53:38 PDT 2015


            Bug ID: 143004
           Summary: [Seccomp] Web process has too much access to /run/user
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at igalia.com

We grant access to all of /run/user/1000/ (where 1000 is my UID), which is needed for at-spi2 since it puts folders with random-looking names. But there are sockets there for gnome-keyring, dconf, and gvfs that the web process really should not be able to touch.

Possible solutions:

* Support globs, so that we can more precisely whitelist /run/user/1000/at-spi2-* instead.
* Even then, I imagine the web process can do bad things to other apps with that permission... can it be used to inspect or control other processes? It would be nicest if at-spi2 created a more predictable directory name so that we could limit the web process.

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