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→FIRM-package System Modules: rip
| September 19, 2018
| September 19, 2018
| SciresM
| SciresM
|-
| System modules vulnerable to selective downgrade attacks
| Horizon has no mechanism for specifying the specific title version to Loader on process creation.
Observing this, one can note that after a system update one could install a downgraded version of a specific system module (e.g. nvservices) while leaving the rest of the OS at the same version.
Unless there was some breaking API change, this allows one to make a console vulnerable once more to an exploit in a sysmodule by downgrading it and nothing else.
This was fixed in [[8.1.0]] by incrementing a version field in NPDM, and checking it against a hardcoded list for certain titles in Loader's process creation func.
| With access to content installation commands (or a vulnerable lower version to selectively install newer titles), reintroducing bugs in vulnerable system modules on newer firmware versions.
| [[8.1.0]]
| [[8.1.0]]
| When FIRM was first dumped in 2017.
| June 17, 2019
| Everyone
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