The penny-flooding protection mechanism in the CTxMemPool::accept method in bitcoind and Bitcoin-Qt before 0.4.9rc1, 0.5.x before 0.5.8rc1, 0.6.0 before 0.6.0.11rc1, 0.6.1 through 0.6.5 before 0.6.5rc1, and 0.7.x before 0.7.3rc1 allows remote attackers to determine associations between wallet addresses and IP addresses via a series of large Bitcoin transactions with insufficient fees.
2013-03-12T11:28:18.337
2025-04-11T00:51:21.963
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | bitcoin | bitcoin-qt | ≤ 0.4.8 | Yes |
| Application | bitcoin | bitcoin-qt | 0.4 | Yes |
| Application | bitcoin | bitcoin-qt | 0.5.0 | Yes |
| Application | bitcoin | bitcoin-qt | 0.5.0.4 | Yes |
| Application | bitcoin | bitcoin-qt | 0.5.1 | Yes |
| Application | bitcoin | bitcoin-qt | 0.5.3.0 | Yes |
| Application | bitcoin | bitcoin-qt | 0.5.7 | Yes |
| Application | bitcoin | bitcoin-qt | 0.6.0.10 | Yes |
| Application | bitcoin | bitcoin-qt | 0.6.3 | Yes |
| Application | bitcoin | bitcoin-qt | 0.7.0 | Yes |
| Application | bitcoin | bitcoin-qt | 0.7.1 | Yes |
| Application | bitcoin | bitcoin-qt | 0.7.2 | Yes |
| Application | bitcoin | bitcoin_core | * | Yes |
| Application | bitcoin | bitcoin_core | 0.3.4 | Yes |
| Application | bitcoin | bitcoin_core | 0.3.5 | Yes |
| Application | bitcoin | bitcoin_core | 0.3.8 | Yes |
| Application | bitcoin | bitcoin_core | 0.3.10 | Yes |
| Application | bitcoin | bitcoin_core | 0.3.11 | Yes |
| Application | bitcoin | bitcoin_core | 0.3.12 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.0 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.1 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.1 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.2 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.3 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.4 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.4 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.5 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.6 | Yes |
| Application | bitcoin | bitcoin_core | 0.4.7 | Yes |
| Application | bitcoin | bitcoin_core | 0.5.0 | Yes |
| Application | bitcoin | bitcoin_core | 0.5.3 | Yes |
| Application | bitcoin | bitcoin_core | 0.5.3.1 | Yes |
| Application | bitcoin | bitcoin_core | 0.5.4 | Yes |
| Application | bitcoin | bitcoin_core | 0.5.5 | Yes |
| Application | bitcoin | bitcoin_core | 0.5.6 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.0.1 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.0.2 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.0.3 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.0.4 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.0.5 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.0.6 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.0.7 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.0.8 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.1 | Yes |
| Application | bitcoin | bitcoin_core | 0.6.2 | Yes |
| Application | bitcoin | bitcoind | ≤ 0.4.4 | Yes |
| Application | bitcoin | bitcoind | 0.5.7 | Yes |
| Application | bitcoin | bitcoind | 0.6.0.0 | Yes |
| Application | bitcoin | bitcoind | 0.6.0.10 | Yes |
| Application | bitcoin | bitcoind | 0.6.3 | Yes |
| Application | bitcoin | bitcoind | 0.6.4 | Yes |
| Application | bitcoin | bitcoind | 0.7.0 | Yes |
| Application | bitcoin | bitcoind | 0.7.1 | Yes |
| Application | bitcoin | bitcoind | 0.7.2 | Yes |