Security Problems Are Primarily Just Bugs, Linus Torvalds Says (iu.edu)

Linus Torvalds, in his signature voice: Some security people have scoffed at me when I say that security problems are primarily "just bugs." Those security people are f*cking morons. Because honestly, the kind of security person who doesn't accept that security problems are primarily just bugs, I don't want to work with. Security firm Errata Security has defended Linus's point of view.

Comments

True, but.

[XXongo]

It's true, security problems usually exploit a bug. BUT, in general, there is a systematic problem underneath the bug, which allows a bug in a program to escalate to gain access to root-level systems. So, it's not just a bug, but a bug that is built on a system that does not have security built in.

Re: They're bugs, unless they're not

[Narcocide]

The backdoor in SELinux isn't in the code, it's in the setup documentation.

Re:Security problems are NOT just bugs

[hey!]

A few years ago I spent some time studying ontology technologies. In a nutshell ontology is a branch of philosophy having to do with "being" and existence, but in an information technology context it refers to models of reality that are built around taxonomic models (e.g. statements like "security problems" are a kind of "software bug"). This has most obvious applications in object oriented class hierarchies, but taxonomic models are also a big part of database design and also implicitly arise in the design of data interchange formats.

Here's what I took away from my dive into the intersection of metaphysics and software engineering: taxonomic models are only valid within a specific domain of application. Even if you intend to model objective reality, you end up modeling just the parts you work with.

This is a perfect example. Torvalds is effectively saying while some security problems may not be bugs, but for practical purposes nearly all of them are. Clearly this is true for him, so true that he literally doesn't know how to work with people concerned with non-bug security problems. What he is saying has really more to do with what he does on a day to day basis, rather than about the overall field of security. In that field you also have to deal with issues like trust delegation, agency, physical security and and social engineering. Clearly Torvalds must know these things exist, but for him they might as well not.

People are very seldom concerned with some kind of universal model of capital T Truth; they're almost always concerned with creating models that help them get their job done. This is inevitable, and it creates problems when you try to glue data from different sources together. The unnecessary problems that arise come from people who don't accept that their useful domain-specific models don't describe all of objective reality.