Описание
Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction with nSequence = 0xff_ff_ff_ff, spending an unconfirmed parent with nSequence <= 0xff_ff_ff_fd, should be replaceable because there is inherited signaling by the child transaction. However, the actual PreChecks implementation does not enforce this. Instead, mempool rejects the replacement attempt of the unconfirmed child transaction.
Ссылки
- Vendor Advisory
- Vendor Advisory
- Third Party Advisory
- Third Party Advisory
- Mailing ListThird Party Advisory
- Vendor Advisory
- Vendor Advisory
- Third Party Advisory
- Third Party Advisory
- Mailing ListThird Party Advisory
Уязвимые конфигурации
EPSS
6.5 Medium
CVSS3
6.4 Medium
CVSS2
Дефекты
Связанные уязвимости
Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the rep ...
Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction with nSequence = 0xff_ff_ff_ff, spending an unconfirmed parent with nSequence <= 0xff_ff_ff_fd, should be replaceable because there is inherited signaling by the child transaction. However, the actual PreChecks implementation does not enforce this. Instead, mempool rejects the replacement attempt of the unconfirmed child transaction.
Уязвимость функционала PreChecks эталонной реализации Bitcoin Bitcoin Core, связанная с неправильной авторизацией, позволяющая нарушителю нарушить целостность данных, а также вызвать отказ в обслуживании
EPSS
6.5 Medium
CVSS3
6.4 Medium
CVSS2