CVE-2019-16748 Memory corruption in n/a
A heap-based buffer over-read in wolfSSL allows attackers to cause denial of service or disclose sensitive memory contents during TLS handshakes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-16748?
CVE-2019-16748 is a critical memory corruption vulnerability in Wolfssl Wolfssl, published on 24 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2019-16748?
It affects 1 product.
Products include Wolfssl Wolfssl.
How do I fix CVE-2019-16748?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-16748 being exploited?
There is no known exploitation of CVE-2019-16748 in the wild and no public exploit code.
Other vulnerabilities in Wolfssl Wolfssl
Sources
Also known as DEBIAN-CVE-2019-16748, GHSA-44q4-7h77-fj8h, UBUNTU-CVE-2019-16748.