X-Git-Url: http://git.tremily.us/?p=ikiwiki.git;a=blobdiff_plain;f=doc%2Fsecurity.mdwn;h=b726211112e8b710b5914936d145f9eb44d768d8;hp=7b056fd6c1fecbb4101cb8f9c5ba9dbf3efb867e;hb=965afd875cd168713e9351d3c4c992c31f0bea0a;hpb=57706b5d4a0d34089ec5de7f3663eec19f97a708 diff --git a/doc/security.mdwn b/doc/security.mdwn index 7b056fd6c..b72621111 100644 --- a/doc/security.mdwn +++ b/doc/security.mdwn @@ -74,6 +74,12 @@ Even with locking, if an attacker has local write access to the checkout, they could still fool ikiwiki using similar races. So it's best if only one person can ever write to the checkout that ikiwiki compiles the moo from. +## webserver symlink attacks + +If someone checks in a symlink to /etc/passwd, ikiwiki would publish that. +To aoid this, ikiwiki will need to avoid reading files that are symlinks. +TODO and note discussion of races above. + ## cgi security When ikiwiki runs as a cgi to edit a page, it is passed the name of the @@ -82,4 +88,4 @@ editing of ../../../foo, or editing of files that are not part of the wiki, such as subversion dotfiles. This is done by sanitising the filename removing unallowed characters, then making sure it doesn't start with "/" or contain ".." or "/.svn/". Annoyingly ad-hoc, this kind of code is where -security holes breed. +security holes breed. It needs a test suite at the very least.