CVE-2024-23688
Discovery uses the same AES/GCM Nonce throughout the session
描述
Discovery uses the same AES/GCM Nonce throughout the session though it should be generated on per message basis which can lead to the leaking of the session key. As the actual ENR record is signed with a different key it is not possible for an attacker to alter the ENR record. Note that the node private key is not compromised, only the session key generated to communicate with an individual peer. From [discovery spec](https://github.com/ethereum/devp2p/blob/f97b8a5b8e9589d3355ebbd9d4a58d5d1644bdf7/discv5/discv5-theory.md#session-cache): > The number of messages which can be encrypted with a certain session key is limited because encryption of each message requires a unique nonce for AES-GCM. In addition to the keys, the session cache must also keep track of the count of outgoing messages to ensure the uniqueness of nonce values. Since the wire protocol uses 96 bit AES-GCM nonces, it is strongly recommended to generate them by encoding the current outgoing message count into the first 32 bits of the nonce and filling the remaining 64 bits with random data generated by a cryptographically secure random number generator.
如何修補 CVE-2024-23688
要修補 CVE-2024-23688,請將受影響套件升級到下列已修補版本。
- —升級至 0.4.5 或更新版本
CVE-2024-23688 正在被利用嗎?
低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 0.4.5