CVE-2019-15651: Critical severity wolfssl wolfmqtt vulnerability

Published Aug 26, 2019

Updated

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

Affected Software

1 affected component

wolfSSL wolfssl=4.1.0

Event History

Aug 26, 2019

CVE Published

via MITRE·09:57 PM

Data Sourced

via MITRE·09:57 PM

Description

Frequently Asked Questions

What is CVE-2019-15651?

CVE-2019-15651 is a vulnerability in wolfSSL 4.1.0 that allows a one-byte heap-based buffer over-read in DecodeCertExtensions.

What is the severity of CVE-2019-15651?

The severity of CVE-2019-15651 is critical with a severity value of 9.8.

How does CVE-2019-15651 affect wolfSSL?

CVE-2019-15651 affects wolfSSL 4.1.0 and allows for a one-byte heap-based buffer over-read in the DecodeCertExtensions function in wolfcrypt/src/asn.c.

How can I fix CVE-2019-15651?

To fix CVE-2019-15651, it is recommended to update wolfSSL to a version that is not affected by the vulnerability.

Where can I find more information about CVE-2019-15651?

More information about CVE-2019-15651 can be found at the following URL: https://github.com/wolfSSL/wolfssl/issues/2421