CVE-2013-4165

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% 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-200

Description

The 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.

Affected products

Bitcoin Core: 0.8.1

References

http://openwall.com/lists/oss-security/2013/07/25/5
https://github.com/bitcoin/bitcoin/issues/2838
https://github.com/bitcoin/bitcoin/pull/2845
http://openwall.com/lists/oss-security/2013/07/25/5
https://github.com/bitcoin/bitcoin/issues/2838
https://github.com/bitcoin/bitcoin/pull/2845

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