What is CVE-2020-12119?

CVE-2020-12119 is a high-severity vulnerability in Ledger Live, classified under Insufficient Verification of Data Authenticity. CVSS score: 8.1/10. Published 2020-07-02.

How severe is CVE-2020-12119?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Ledger Live

CVE-2020-12119

Ledger Live before 2.7.0 does not handle Bitcoin's Replace-By-Fee (RBF). It increases the user's balance with the value of an unconfirmed transaction as soon as it is received (before the transaction is confirmed) and does not decrease the balance when it is canceled. As a result, users are exposed to basic double spending attacks, amplified double spending attacks, and DoS attacks without user consent.

EPSS: 0.005 (39.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.

Affected products

Ledger Ledger_live
N/a — versions n/a

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

cve@mitre.org (x_refsource_CONFIRM, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2020-12119?: CVE-2020-12119 is a high-severity vulnerability in Ledger Live, classified under Insufficient Verification of Data Authenticity. CVSS score: 8.1/10. Published 2020-07-02.
How severe is CVE-2020-12119?: High severity. CVSS v3 base score is 8.1 out of 10.