CVE-2019-18840

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Summary

CVECVE-2019-18840
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-11-09 13:15:00 UTC
Updated2019-11-12 20:57:00 UTC
DescriptionIn 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.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Wolfssl Wolfssl All All All All

References

ReferenceSourceLinkTags
Heap based buffer overflow while parsing crafted X.509 certificates · Issue #2555 · wolfSSL/wolfssl · GitHub MISC github.com Exploit, Third Party Advisory
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