Date: Tue, 9 Jan 2018 08:37:08 -0700 From: Kurt Seifried <kseifried@...hat.com> To: oss-security <oss-security@...ts.openwall.com> Subject: Re: Own on install. How grave it is? Many OS installs/etc take a password during install, either manually (e.g. prompting you at the command line), or the OS is installed using tools that allow a password to be set (e.g. Red Hat kickstarter, Satellite, CloudForms). In general if an OS install does NOT give you any way to set a password during install and forces you to install the product, boot it and then login with blank credentials and set a password you end up with a CVE since a network based attacker can easily win that race, a good example being FreeNAS CVE-2014-5334. If the installer can prompt for a password or take a password through other means (e.g. kickstarter) than there's a safe option so no CVE is needed typically. On Tue, Jan 9, 2018 at 6:42 AM, Georgi Guninski <guninski@...inski.com> wrote: > [don't know if this is ontopic. Not on the list so CC me]. > > This is well known, haven't seen it discussed. > > In short doing clean install (factory defaults) has a window of > opportunity when the device is vulnerable to a known network attack. > > It used to be common sense to reinstall after compromise (probably > doesn't apply to the windows world where the antivirus takes care). > > All versions of windoze are affected by the SMB bug to my knowledge. > Debian jessie (old stable) is vulnerable to malicious mirror attack. > > More of interest to me are devices where the installation media is > fixed and can't be changed. > > This includes smartphones and wireless routers. > > Some smartphones might be vulnerable to wifi RCE (found by google?). > Some wireless routers might be vulnerable to wifi RCE or > default admin password attack over wifi. > > Internet of Things will make things worse (some NAS devices are > affected). > > Shielding the device might not be solution since updates must be > applied. > > Are the above concerns real? > > Have this been studied systematically? > > -- Kurt Seifried -- Red Hat -- Product Security -- Cloud PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993 Red Hat Product Security contact: secalert@...hat.com
Powered by blists - more mailing lists
Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.