CVE-2020-24659
HIGH7.5EPSS 3.6%Published: 9/4/2020Modified: 4/28/2026
Description
An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.
Affected packages (2)
- Alpine/gnutlsfrom 0, < 3.6.15-r0
- Debian/gnutls28from 0, < 3.6.15-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |