What is CVE-2023-26557?

CVE-2023-26557 is a high-severity vulnerability in Iofinnet Tss-lib, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2023-04-21.

How severe is CVE-2023-26557?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Iofinnet Tss-lib

CVE-2023-26557

io.finnet tss-lib before 2.0.0 can leak the lambda value of a private key via a timing side-channel attack because it relies on Go big.Int, which is not constant time for Cmp, modular exponentiation, or modular inverse. An example leak is…

EPSS: 0.009 (54.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Iofinnet Tss-lib
N/a — versions n/a

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

cve@mitre.org (Release Notes)
cve@mitre.org (Product)
cve@mitre.org (Release Notes)
cve@mitre.org

Frequently asked questions

What is CVE-2023-26557?: CVE-2023-26557 is a high-severity vulnerability in Iofinnet Tss-lib, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2023-04-21.
How severe is CVE-2023-26557?: High severity. CVSS v3 base score is 7.5 out of 10.