LightDM before 1.0.6 allows local users to change ownership of arbitrary files via a symlink attack on ~/.Xauthority.
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Link | Tags |
---|---|
http://www.ubuntu.com/usn/USN-1262-1 | vendor advisory |
http://www.openwall.com/lists/oss-security/2011/11/02/9 | mailing list |
http://www.openwall.com/lists/oss-security/2011/11/02/10 | mailing list |
http://www.openwall.com/lists/oss-security/2011/11/02/6 | mailing list |
http://lists.freedesktop.org/archives/lightdm/2011-November/000178.html | mailing list |