What is CVE-2019-15651?

CVE-2019-15651 is a critical-severity vulnerability in Wolfssl, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2019-08-26.

How severe is CVE-2019-15651?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2019-15651 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Wolfssl

CVE-2019-15651

wolfSSL 4.1.0 has a one-byte heap-based buffer over-read in DecodeCertExtensions in wolfcrypt/src/asn.c because reading the ASN_BOOLEAN byte is mishandled for a crafted DER certificate in GetLength_ex.

Vulnerability class: Buffer Overflow

EPSS: 0.010 (59.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Wolfssl — versions 4.1.0
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-15651?: CVE-2019-15651 is a critical-severity vulnerability in Wolfssl, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2019-08-26.
How severe is CVE-2019-15651?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-15651 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.