The rest library was designed to make it easier to access web services that claim to be RESTful. A RESTful service should have URLs that represent remote objects, which methods can then be called on. It was found that the OAuth implementation in librest, a helper library for RESTful services, incorrectly truncated the pointer returned by the rest_proxy_call_get_url call. An attacker could use this flaw to crash an application using the librest library. All users of rest are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the update, all applications using librest must be restarted for the update to take effect.