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Add X-Content-Security-Policy: sandbox recommendation for the content repository #866

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dkasak opened this issue Jul 23, 2021 · 0 comments
Open

Add X-Content-Security-Policy: sandbox recommendation for the content repository #866

dkasak opened this issue Jul 23, 2021 · 0 comments
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clarification An area where the expected behaviour is understood, but the spec could do with being more explicit enhancement A suggestion for a relatively simple improvement to the protocol

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@dkasak
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dkasak commented Jul 23, 2021

This is a non-standard CSP-like header supported by IE11 which only supports the sandbox directive. This is enough to disable script execution however and can therefore mitigate the problem of XSS in the content repository for users still using IE11.

C.f. Synapse PR: matrix-org/synapse#10468
@dkasak dkasak added clarification An area where the expected behaviour is understood, but the spec could do with being more explicit enhancement A suggestion for a relatively simple improvement to the protocol labels Jul 23, 2021
@richvdh richvdh transferred this issue from matrix-org/matrix-spec-proposals Mar 2, 2022
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clarification An area where the expected behaviour is understood, but the spec could do with being more explicit enhancement A suggestion for a relatively simple improvement to the protocol
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