Systems deployed using affected versions of the Blackfire container may allow a remote attacker to achieve root access with a blank password. The Blackfire Docker image through contains a blank password for the root user. * An attacker can gain control over the system, specifically on the “vtpm_server” process The relevant process with freely controlled data. Then, in the function “handleRequest” this size is then used in order to allocate a payload onĪs this payload is allocated on the stack, this will allow overflowing the stack size allocated for When a connection is made, the server is waiting for 4 bytes of data, which will be the header,Īnd these 4 bytes would be parsed as uint32 size of the actual data to come. The communication with this server is done using protobuf, and the data is comprised of 2 As noted in the “VTPM.md” file in the eve documentation, “VTPM is a server listening on portĨ877 in EVE, exposing limited functionality of the TPM to the clients.Įxecute tpm2-tools binaries from a list of hardcoded options”
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