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Graph/tls1_process_heartbeat

Component

tls1_process_heartbeat

tls1_process_heartbeat

tls1_process_heartbeat

Node Details

Public graph metadata

Updated5/1/2026

PageRank0.0000

Connections

1 linked nodes

AFFECTSRootCause

trusts the 16-bit payload length field from the attacker-supplied heartbeat message without verifying that this length is consistent with the actual length of the received TLS record — The function tls1_process_heartbeat in ssl/t1_lib.c. Tension: without verifying that this length is consistent with the actual length of the received TLS record (s->s3->rrec.length). Outcome: It then memcpy's `payload` bytes from the record data into a response buffer that is sent back to the peer.

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