CVE-2022-30123

Affected: https://github.com/rack/rack

A sequence injection vulnerability exists in Rack <2.0.9.1, <2.1.4.1 and <2.2.3.1 which could allow is a possible shell escape in the Lint and CommonLogger components of Rack.

GHSA-wq4h-7r42-5hrr — Possible shell escape sequence injection vulnerability in Rack

Affected: RubyGems: rack

There is a possible shell escape sequence injection vulnerability in the Lint and CommonLogger components of Rack. This vulnerability has been assigned the CVE identifier CVE-2022-30123.

Versions Affected: All. Not affected: None Fixed Versions: 2.0.9.1, 2.1.4.1, 2.2.3.1

## Impact Carefully crafted requests can cause shell escape sequences to be written to the terminal via Rack's Lint middleware and CommonLogger middleware. These escape sequences can be leveraged to possibly execute commands in the victim's terminal.

Impacted applications will have either of these middleware installed, and vulnerable apps may have something like this:

``` use Rack::Lint ```

``` use Rack::CommonLogger ```

All users running an affected release should either upgrade or use one of the workarounds immediately.

## Workarounds Remove these middleware from your application

Most recent entries from all

CVE-2022-30123

GHSA-wq4h-7r42-5hrr — Possible shell escape sequence injection vulnerability in Rack