CVE-2019-18840
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2019-18840
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18840.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2019-18840
- Related
- Published
- 2019-11-09T13:15:10Z
- Modified
- 2025-02-19T02:50:43.897947Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:11 / wolfssl
Package
- Name
- wolfssl
- Purl
- pkg:deb/debian/wolfssl?arch=source
Debian:12 / wolfssl
Package
- Name
- wolfssl
- Purl
- pkg:deb/debian/wolfssl?arch=source
Debian:13 / wolfssl
Package
- Name
- wolfssl
- Purl
- pkg:deb/debian/wolfssl?arch=source