this post was submitted on 28 Oct 2024
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Static credentials with passwords written into a firewall's code. What could go wrong?

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[–] horse_battery_staple 3 points 2 months ago (1 children)
[–] [email protected] 13 points 2 months ago* (last edited 2 months ago) (2 children)

~~Right in the Security Advisory~~

allow an unauthenticated, local attacker to access an affected system using static credentials.

Edit: NVM, later it says

The second is using SSH, which is enabled by default on the management interface of the device.

[–] horse_battery_staple 14 points 2 months ago (1 children)

That could be any user logged into the CLI. Cisco is famously a network appliance company and they make admin available over the network. Anyone who can get to the LAN/VLAN these appliances are on can exploit this. So not specifically physical access.

[–] [email protected] 12 points 2 months ago (3 children)

You are right:

The second is using SSH, which is enabled by default on the management interface of the device. SSH can also be enabled on data interfaces.

Holy fuck.

[–] horse_battery_staple 5 points 2 months ago* (last edited 2 months ago)

Yup, that's Cisco alright

[–] [email protected] 2 points 2 months ago (1 children)

Management interface is only available locally

[–] [email protected] 5 points 2 months ago (1 children)

The management interface can 100% be put on LAN and often is.

[–] [email protected] 1 points 2 months ago* (last edited 2 months ago) (1 children)

Okay sure then you're asking for trouble. You could also configure the word password as your password.

[–] [email protected] 1 points 2 months ago

I agree, its not something I would do.

Doesn't change that it happens.

[–] [email protected] 2 points 2 months ago (1 children)

You are right:

You should have gone with “correct”.

[–] horse_battery_staple 5 points 2 months ago* (last edited 2 months ago) (1 children)

~~Is that needed or useful criticism?~~

HA! I totally missed the joke. Well played.

[–] Hawke 5 points 2 months ago (1 children)

I think it’s more a reference to your username than actual criticism.

[–] [email protected] 5 points 2 months ago (1 children)

Yeah, I thought that would land better.

[–] horse_battery_staple 3 points 2 months ago (1 children)

Oh GEEZ! Sorry, I had a VERY literal day at work today. Completely flew over my head.

[–] [email protected] 2 points 2 months ago

It’s all good. I’ve been having some of those days for what feels like the past month or two now. Hope work chills out for you!

[–] [email protected] -2 points 2 months ago (1 children)

The management interface is only available with physical access

[–] jaybone 6 points 2 months ago (2 children)

Nothing prevents you from putting this on a LAN that can be accessed from over the internet.

[–] [email protected] 5 points 2 months ago (1 children)

Even if it's not directly accessible from the internet on its own, if it's accessible from an host exposed to the internet then anyone that can compromise a single host can immediately compromise the firewall.

"It's only exposed to the outdated wordpress server" is effectively the same as being exposed to the internet.

[–] jaybone 5 points 2 months ago

Yeah that’s my point. Even if the manufacturer actually limits the IP config on the mgmt interface to be configured as not routable over the internet, it could intentionally be on a subnet accessible by some kind of ssh jump server or bastion host. (Or in your example, maybe unintentionally via the Wordpress server.)

[–] [email protected] 1 points 2 months ago

Nothing prevents you from making it remotely accessible with the password "password" either