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CVE-2020-24659 PUBLISHED

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.

EPSS 3.63% · 87.7th percentile

Risk Scores

EPSS Score
3.63%
87.7th percentile

Affected Products

VendorProductVersions
Ubuntu:20.04:LTSgnutls280, 3.6.9-5ubuntu1, 3.6.9-5ubuntu2

Timeline

References

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