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furicle avatar furicle commented on May 28, 2024

Isn't that knowledge only available AFTER the intended receiver starts receiving the file?

from croc.

mgerstner avatar mgerstner commented on May 28, 2024

Isn't that knowledge only available AFTER the intended receiver starts receiving the file?

It is a race condition. The command line will be visible in the process list as soon as the process is created by the kernel. The connection to the relay will not have been created yet. A local attacker that knows what to look for can try to be faster in connecting to the relay and thus "steal" the files. There is no guarantee that it works - as usual with race conditions - and there is only one shot available.

It would be worse if custom password is used by the sender and is also reused, because then the obtained information will be valid for multiple transmissions.

from croc.

mgerstner avatar mgerstner commented on May 28, 2024

Mitre assigned CVE-2023-43621 to track this issue.

from croc.

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