CVE-2017-3730 Bad (EC)DHE parameters cause a client crash

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...

Internet Bug Bounty: CVE-2017-3730: Bad (EC)DHE parameters cause a client crash

https://www.openssl.org/news/secadv/20170126.txt https://guidovranken.wordpress.com/2017/01/26/cve-2017-3730-openssl-1-1-0-remote-client-denial-of-service-affects-servers-as-well-poc/...

Vulnerability in OpenSSL - Bad (EC)DHE parameters cause a client crash

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. Found by Guido Vranken...