Security Advisory

CVE-2019-18840

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2019-11-09 12:58:52

Last updated 2024-08-05 02:02:39

Assigner mitre

CVSS score 7.5

State PUBLISHED

Description

In wolfSSL 4.1.0 through 4.2.0c, there are missing sanity checks of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer overflow inside the DecodedCert structure in GetName in wolfcrypt/src/asn.c because the domain name location index is mishandled. Because a pointer is overwritten, there is an invalid free.

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