The SecureDrop Client is a desktop application for journalists to communicate with sources and work with submissions on the SecureDrop Workstation. Prior to versions 0.14.1 and 1.0.1, an attacker who has already gained code execution in a virtual machine on the SecureDrop Workstation could gain code execution in the `sd-log` virtual machine by sending a specially crafted log entry. The vulnerability is not exploitable remotely and requires an attacker to already have code execution on one of the other virtual machines (VMs) of the system. Due to the Workstation's underlying usage of Qubes for strong isolation, the vulnerability would have allowed lateral movement between any log-enabled VM and the `sd-log` VM, but no further. The SecureDrop workstation collects logs centrally in an isolated virtual machine named `sd-log` for easy export for support and debugging purposes. The `sd-log` VM is completely isolated from the internet and ingests logs via a narrow Qubes RPC policy that allo…

The SecureDrop Client is a desktop application for journalists to communicate with sources and work with submissions on the SecureDrop Workstation. Prior to version 0.14.1, a malicious SecureDrop Server could obtain code execution on the SecureDrop Client virtual machine (`sd-app`). SecureDrop Server itself has multiple layers of built-in hardening, and is a dedicated physical machine exposed on the internet only via Tor hidden services for the Source and Journalist interfaces, and optionally via remote SSH access over another Tor hidden service. A newsroom's SecureDrop Workstation communicates only with its own dedicated SecureDrop Server. The SecureDrop Client runs in a dedicated Qubes virtual machine, named `sd-app`, as part of the SecureDrop Workstation. The private OpenPGP key used to decrypt submissions and replies is stored in a separate virtual machine and never accessed directly. The vulnerability lies in the code responsible for downloading replies. The filename of the repl…