CVE-2013-3220

Severity: medium (CVSS 6.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-08-02 · updated 2026-06-16
Weakness: CWE-399

Description

bitcoind 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.

Affected products

Bitcoin-Qt: through 0.4.9; 0.4-rc4, 0.4.8-rc4, 0.5.0-rc1, 0.5.0.4, 0.5.1-rc1, 0.5.3.0 (+8)
Bitcoin Core: 0.3.4, 0.3.5, 0.3.8, 0.3.10, 0.3.11, 0.3.12 (+26)
Bitcoind: through 0.4.9; 0.4.4-rc4, 0.5.7, 0.5.8-rc1, 0.6.0.0, 0.6.0.10-rc4, 0.6.3 (+6)
Bitcoin Qitcoin-Qt: 0.6.4-rc4, 0.6.5-rc1

References

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