On Tue, Aug 18, 2009 at 10:22:26AM +0200, Christoph A. wrote:
Hi,
I wanted to try the xguest user, but firefox always crashed on startup.
This AVC appears many times in the logs:
type=AVC msg=audit(1250580934.287:24730): avc: denied { execmem } for pid=4845 comm="firefox" scontext=xguest_u:xguest_r:mozilla_t:s0 tcontext=xguest_u:xguest_r:mozilla_t:s0 tclass=process
I have a feeling that this is due to a plugin that i not run in the nsplugin_t domain, but i might be wrong. Can you confirm or deny that?
Afaik mozilla does not require { execmem }, but many of those crappy plugins do ( for example flash-plugin ). I certain configurations those plugins do not get run in the designated nsplugin_t domain.
In that case firefox runs them.
I am not sure whether mozilla_t domain transitions to nsplugin_t at all.
In practice i believe it does not matter all that much what needs it. You can allow or (silently) deny it. You can use audit2allow to create an add-on to the mozilla_t domain.
Pipe the particular AVC denial into audit2allow -M mymozilla; semodule -i mymozilla.pp
execmem is not allowed: getsebool -a|grep execmem allow_execmem --> off
Allowing execmem resolves the problem, but is there a better solution for this?
Another question:
I would like to make some permanent changes to the xguest account (keyboard layout, safe passphrase for wifi access, set keyring pw, remove some icons,...) How can I as admin do that?
thanks, Christoph
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