Bitcoin vulnerabilities, page 2
55 vulnerabilities
Known vulnerabilities in Bitcoin products, newest first, with CVSS severity, EPSS, KEV listings and ransomware use, across 6 products.
RoutineCVE-2021-31876bitcoinbitcoin bitcoinBitcoin 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.CVSS6.5MediumEPSS1.61%PrioritiseCVE-2021-3401bitcoinbitcoin bitcoinBitcoin Core before 0.19.0 might allow remote attackers to execute arbitrary code when another application unsafely passes the -platformpluginpath argument to the bitcoin-qt program, as demonstrated by an x-scheme-handler/bitcoin handler for a .desktop file or a web browser. NOTE: the discoverer states "I believe that this vulnerability cannot actually be exploited."CVSS9.8CriticalEPSS10.92%PrioritiseCVE-2021-3195bitcoin · bitcoin_core +3 morebitcoin bitcoin_corebitcoind in Bitcoin Core through 0.21.0 can create a new file in an arbitrary directory (e.g., outside the ~/.bitcoin directory) via a dumpwallet RPC call. NOTE: this reportedly does not violate the security model of Bitcoin Core, but can violate the security model of a fork that has implemented dumpwallet restrictionsCVSS7.5HighEPSS1.30%PrioritiseCVE-2020-14198bitcoin · bitcoin_corebitcoin bitcoin_coreBitcoin Core 0.20.0 allows remote denial of service.CVSS7.5HighEPSS3.09%PrioritiseCVE-2018-17145bcoin +7 morebcoin bcoinBitcoin Core 0.16.x before 0.16.2 and Bitcoin Knots 0.16.x before 0.16.2 allow remote denial of service via a flood of multiple transaction inv messages with random hashes, aka INVDoS. NOTE: this can also affect other cryptocurrencies, e.g., if they were forked from Bitcoin Core after 2017-11-15.CVSS7.5HighEPSS4.76%PrioritiseCVE-2017-12842bitcoin · bitcoin_corebitcoin bitcoin_coreBitcoin Core before 0.14 allows an attacker to create an ostensibly valid SPV proof for a payment to a victim who uses an SPV wallet, even if that payment did not actually occur. Completing the attack would cost more than a million dollars, and is relevant mainly only in situations where an autonomous system relies solely on an SPV proof for transactions of a greater dollar amount.CVSS7.5HighEPSS2.22%PrioritiseCVE-2015-3641bitcoin · bitcoin_corebitcoin bitcoin_corebitcoind and Bitcoin-Qt prior to 0.10.2 allow attackers to cause a denial of service (disabled functionality such as a client application crash) via an "Easy" attack.CVSS7.5HighEPSS1.76%RoutineCVE-2018-20586bitcoin · bitcoin_corebitcoin bitcoin_corebitcoind and Bitcoin-Qt prior to 0.17.1 allow injection of arbitrary data into the debug log via an RPC call.CVSS5.3MediumEPSS1.09%RoutineCVE-2017-18350bitcoin · bitcoin_corebitcoin bitcoin_corebitcoind and Bitcoin-Qt prior to 0.15.1 have a stack-based buffer overflow if an attacker-controlled SOCKS proxy server is used. This results from an integer signedness error when the proxy server responds with an acknowledgement of an unexpected target domain name.CVSS5.9MediumEPSS1.60%PrioritiseCVE-2019-15947bitcoin · bitcoin_corebitcoin bitcoin_coreIn Bitcoin Core 0.18.0, bitcoin-qt stores wallet.dat data unencrypted in memory. Upon a crash, it may dump a core file. If a user were to mishandle a core file, an attacker can reconstruct the user's wallet.dat file, including their private keys, via a grep "6231 0500" command.CVSS7.5HighEPSS1.56%RoutineCVE-2018-20587bitcoin · bitcoin_core +1 morebitcoin bitcoin_coreBitcoin Core 0.12.0 through 0.17.1 and Bitcoin Knots 0.12.0 through 0.17.x before 0.17.1.knots20181229 have Incorrect Access Control. Local users can exploit this to steal currency by binding the RPC IPv4 localhost port, and forwarding requests to the IPv6 localhost port.CVSS5.5MediumEPSS0.35%PrioritiseCVE-2018-17144bitcoin · bitcoin_core +5 morebitcoin bitcoin_coreBitcoin Core 0.14.x before 0.14.3, 0.15.x before 0.15.2, and 0.16.x before 0.16.3 and Bitcoin Knots 0.14.x through 0.16.x before 0.16.3 allow a remote denial of service (application crash) exploitable by miners via duplicate input. An attacker can make bitcoind or Bitcoin-Qt crash.CVSS7.5HighEPSS6.75%PrioritiseCVE-2016-10725bitcoin · bitcoin_core +2 morebitcoin bitcoin_coreIn Bitcoin Core before v0.13.0, a non-final alert is able to block the special "final alert" (which is supposed to override all other alerts) because operations occur in the wrong order. This behavior occurs in the remote network alert system (deprecated since Q1 2016). This affects other uses of the codebase, such as Bitcoin Knots before v0.13.0.knots20160814 and many altcoins.CVSS7.5HighEPSS2.50%PrioritiseCVE-2016-10724bitcoin · bitcoin_core +2 morebitcoin bitcoin_coreBitcoin Core before v0.13.0 allows denial of service (memory exhaustion) triggered by the remote network alert system (deprecated since Q1 2016) if an attacker can sign a message with a certain private key that had been known by unintended actors, because of an infinitely sized map. This affects other uses of the codebase, such as Bitcoin Knots before v0.13.0.knots20160814 and many altcoins.CVSS7.8HighEPSS2.28%PrioritiseCVE-2017-9230bitcoinbitcoin bitcoinThe Bitcoin Proof-of-Work algorithm does not consider a certain attack methodology related to 80-byte block headers with a variety of initial 64-byte chunks followed by the same 16-byte chunk, multiple candidate root values ending with the same 4 bytes, and calculations involving sqrt numbers. This violates the security assumptions of (1) the choice of input, outside of the dedicated nonce area, fed into the Proof-of-Work function should not change its difficulty to evaluate and (2) every Proof-of-Work function execution should be independent. NOTE: a number of persons feel that this methodology is a benign mining optimization, not a vulnerabilityCVSS7.5HighEPSS3.25%RoutineCVE-2013-5700bitcoin · bitcoin_core +1 morebitcoin bitcoin_coreThe Bloom Filter implementation in bitcoind and Bitcoin-Qt 0.8.x before 0.8.4rc1 allows remote attackers to cause a denial of service (divide-by-zero error and daemon crash) via a crafted sequence of messages.CVSS5.0MediumEPSS2.00%RoutineCVE-2013-4627bitcoin · bitcoin_corebitcoin bitcoin_coreUnspecified vulnerability in bitcoind and Bitcoin-Qt 0.8.x allows remote attackers to cause a denial of service (memory consumption) via a large amount of tx message data.CVSS5.0MediumEPSS1.93%RoutineCVE-2013-4165bitcoin · bitcoin_corebitcoin bitcoin_coreThe HTTPAuthorized function in bitcoinrpc.cpp in bitcoind 0.8.1 provides information about authentication failure upon detecting the first incorrect byte of a password, which makes it easier for remote attackers to determine passwords via a timing side-channel attack.CVSS4.3MediumEPSS2.28%RoutineCVE-2013-3220bitcoin · bitcoin_core +3 morebitcoin bitcoin_corebitcoind and Bitcoin-Qt before 0.4.9rc2, 0.5.x before 0.5.8rc2, 0.6.x before 0.6.5rc2, and 0.7.x before 0.7.3rc2, and wxBitcoin, do not properly consider whether a block's size could require an excessive number of database locks, which allows remote attackers to cause a denial of service (split) and enable certain double-spending capabilities via a large block that triggers incorrect Berkeley DB locking.CVSS6.4MediumEPSS2.31%RoutineCVE-2013-3219bitcoin · bitcoin_corebitcoin bitcoin_corebitcoind and Bitcoin-Qt 0.8.x before 0.8.1 do not enforce a certain block protocol rule, which allows remote attackers to bypass intended access restrictions and conduct double-spending attacks via a large block that triggers incorrect Berkeley DB locking in older product versions.CVSS5.0MediumEPSS2.21%