Gnutls

A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to send a large amount of specially crafted messages to the vulnerable server. By recovering the secret from the ClientKeyExchange message, the attacker would be able to decrypt the application data exchanged over that connection.

Published: 2023-02-15T00:00:00.000Z
Updated: 2026-10-14T19:28:14.889Z

A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during verification of pkcs7 signatures in gnutls_pkcs7_verify function.

Published: 2022-08-01T14:01:10.000Z
Updated: 2026-10-14T13:07:07.646Z

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

Published: 2022-08-24T15:07:31.000Z
Updated: 2026-10-14T10:04:07.798Z

A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.

Published: 2021-03-12T18:25:29.000Z
Updated: 2026-10-14T10:04:14.030Z

A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.

Published: 2021-03-12T18:23:59.000Z
Updated: 2026-10-14T10:04:12.446Z