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Don't ever sniff desktop files when the filename is known. In other words,

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2009-02-20  Alexander Larsson  <alexl@redhat.com>

        * gcontenttype.c:
        (g_content_type_guess):
	Don't ever sniff desktop files when the filename is known.
	In other words, only allow desktop files with the .desktop extension
	and when the filename isn't known.
	This is a security precaution since desktop files can execute
	arbitrary code when launched and we don't want to allow them to
	try and hide as another type. There is no legit reason to not
	have the .desktop extension anyway.



svn path=/trunk/; revision=7892
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Alexander Larsson 2009-02-20 07:46:57 +00:00 committed by Alexander Larsson
parent 25e5d1ba2c
commit 9fdf70ba5f
2 changed files with 22 additions and 0 deletions
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12
gio/ChangeLog
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@ -1,3 +1,15 @@
2009-02-20 Alexander Larsson <alexl@redhat.com>
* gcontenttype.c:
(g_content_type_guess):
Don't ever sniff desktop files when the filename is known.
In other words, only allow desktop files with the .desktop extension
and when the filename isn't known.
This is a security precaution since desktop files can execute
arbitrary code when launched and we don't want to allow them to
try and hide as another type. There is no legit reason to not
have the .desktop extension anyway.
2009-02-19 Alexander Larsson <alexl@redhat.com>
Bug 549298 – impossible to copy files with p (pipe) flag

10
gio/gcontenttype.c
View File

@ -933,6 +933,16 @@ g_content_type_guess (const char *filename,
data &&
looks_like_text (data, data_size))
sniffed_mimetype = "text/plain";
/* For security reasons we don't ever want to sniff desktop files
* where we know the filename and it doesn't have a .desktop extension.
* This is because desktop files allow executing any application and
* we don't want to make it possible to hide them looking like something
* else.
*/
if (filename != NULL &&
strcmp (sniffed_mimetype, "application/x-desktop") == 0)
sniffed_mimetype = "text/plain";
}
if (n_name_mimetypes == 0)