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In Google Chrome, I can go to chrome://extensions/ and click "permissions" to view the permissions that an installed extension has been granted. I cannot find an equivalent in Firefox. Is there such a resource? . In Firefox, about:permissions has per-site permissions, which is a great resource but I need per-extension permissions. Firefox version = 23.0.1

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up vote 8 down vote accepted

Read this document. Relevant excerpt (page 3):

The Firefox platform has no mechanisms to restrict the privileges of add-ons. The add-on code is fully trusted by Firefox. The installation of malicious add-ons can result in full system compromise. There is no security measure to restrict the intercommunication between add-ons. As a result an add-on can alter or modify another add-on in the background. There is no security policy or sandboxing ability of XPConnect and XPCOM components which is a serious flaw in the security model. Firefox does not have any type of restrictions on malformed Cross Origin Resource Sharing and socket creation. Some exploitable vulnerabilities are platform independent.

So there is no way to show per add-on permissions because there are no permissions to show. In the Firefox security model, each add-on is roughly equivalent to a piece of native code, which can, by definition, do whatever it wants. This is similar to the situation with signed Java applets.

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wow. great document. If it is current, the situation is worse than I thought. – mcgyver5 Aug 26 '13 at 17:46

Try about:permissions if you have at least Firefox 6 (if not, update NOW!)

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as I said in the post, about:permissions only has site permissions and not extension permissions. – mcgyver5 Aug 26 '13 at 17:31
yeah, I don't think there is a way to see extension permissions. – Rod MacPherson Aug 26 '13 at 17:33

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