CVE-2013-4165

CVE-2013-4165 is a medium-severity vulnerability in Bitcoin Bitcoin Core with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

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.

Frequently asked questions

What is CVE-2013-4165?
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.
How severe is CVE-2013-4165?
CVE-2013-4165 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2013-4165 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4165?
CVE-2013-4165 affects Bitcoin Bitcoin Core. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-4165?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4165 published?
CVE-2013-4165 was published on 2013-08-02 and last updated on 2026-06-16.

References

Affected products (1)

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