Buffer overflow in Wolfssl

CVE-2020-36177

RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.

Vulnerability class: Buffer Overflow

EPSS: 0.035 (88.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-36177?
CVE-2020-36177 is a critical-severity vulnerability in Wolfssl, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-01-06.
How severe is CVE-2020-36177?
Critical severity. CVSS v3 base score is 9.8 out of 10.