Own on install. How grave it is?
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?
The concerns are real and industry resolves this by applying the minimal required patches from a media before connecting device to the network. K. On 2018.01.09. 12:20, Georgi Guninski wrote:
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?
On Thu, Jan 11, 2018 at 11:54:00AM +0200, Kirils Solovjovs wrote:
The concerns are real and industry resolves this by applying the minimal required patches from a media before connecting device to the network.
Thanks. This doesn't appear possible on smartphones, tablets and some IoT, right?
-------- Original message --------From: Georgi Guninski <guninski@guninski.com> Date: 1/11/18 4:52 AM (GMT-08:00) To: Kirils Solovjovs <kirils.solovjovs@kirils.com> Cc: cypherpunks@lists.cpunks.org Subject: Re: Own on install. How grave it is? On Thu, Jan 11, 2018 at 11:54:00AM +0200, Kirils Solovjovs wrote:
The concerns are real and industry resolves this by applying the minimal required patches from a media before connecting device to the network.
Thanks. This doesn't appear possible on smartphones, tablets and some IoT, right?
Phones and tablets? Why not? The update or os is downloaded in full before installation and, at least in android, a dos bootstrap appears to run the install. Rr
On January 11, 2018 4:54:00 AM EST, Kirils Solovjovs <kirils.solovjovs@kirils.com> wrote:
The concerns are real and industry resolves this by applying the minimal required patches from a media before connecting device to the network.
K.
Or keeping a "golden image" which is kept up to date and cloned as needed (either physically or as vm), giving you a base system which has passed whatever hardening and certificatation process org has in place, and has whatever AV or other security software and CM software etc pre-installed.
On 2018.01.09. 12:20, Georgi Guninski wrote:
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?
participants (4)
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g2s -
Georgi Guninski -
John Newman -
Kirils Solovjovs