CVE-2019-16748
9.8
CRITICAL
CVSS 3.1
EPSS 0.40%
Description
In wolfSSL through 4.1.0, there is a missing sanity check of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer over-read in CheckCertSignature_ex in wolfcrypt/src/asn.c.
How to fix CVE-2019-16748
To remediate CVE-2019-16748, upgrade the affected package to a fixed version below.
- Debian/wolfssl—upgrade to 4.2.0+dfsg-1 or later
Is CVE-2019-16748 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.2.0+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |