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auth: validate fingerprint D-Bus signal senders - #1088
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Unicast signals bypass bus-side match rules, so a proxy's well-known sender match does not authenticate the sender. Resolve the current service owner on the same connection and reject mismatched senders or lookup errors before processing fingerprint and sleep signals. Reported-by: Martin Trojer (@martintrojer)
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Unicast signals bypass bus-side match rules, so a proxy's well-known sender match does not authenticate the sender. Resolve the current service owner on the same connection and reject mismatched senders or lookup errors before processing fingerprint and sleep signals.
Reported-by: Martin Trojer (@martintrojer)
Written by codex, verified by me