title: Bad (EC)DHE parameters cause a client crash
description: In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.
problem types: NULL pointer deference
affected:
{
product: OpenSSL
vendor: OpenSSL
versions:
status: affected, version: openssl-1.1.0
status: affected, version: openssl-1.1.0a
status: affected, version: openssl-1.1.0b
status: affected, version: openssl-1.1.0c
}
metrics:
other: [
content: {'lang': 'eng', 'url': 'https://www.openssl.org/policies/secpolicy.html#Moderate', 'value': 'Moderate'}
type: unknown
]