CVE-2024-53259

EIP tracks 1 public exploit for CVE-2024-53259. PoCs published by kota-yata.

AI-analyzed exploit summary This PoC demonstrates CVE-2024-53259 by crafting an ICMP 'Packet Too Large' message with a manipulated MTU to trigger a vulnerability in QUIC implementations. The attack involves sending a malformed ICMP packet to disrupt or exploit the target QUIC server.

quic-go is an implementation of the QUIC protocol in Go. An off-path attacker can inject an ICMP Packet Too Large packet. Since affected quic-go versions used IP_PMTUDISC_DO, the kernel would then return a "message too large" error on sendmsg, i.e. when quic-go attempts to send a packet that exceeds the MTU claimed in that ICMP packet. By setting this value to smaller than 1200 bytes (the minimum MTU for QUIC), the attacker can disrupt a QUIC connection. Crucially, this can be done after completion of the handshake, thereby circumventing any TCP fallback that might be implemented on the application layer (for example, many browsers fall back to HTTP over TCP if they're unable to establish a QUIC connection). The attacker needs to at least know the client's IP and port tuple to mount an attack. This vulnerability is fixed in 0.48.2.