ownCloud: DROWN Attack

ID H1:119808
Type hackerone
Reporter amsda
Modified 2016-03-03T16:28:14



I want to report a drown attack in *.owncloud.com.

A cross-protocol attack was discovered that could lead to decryption of TLS sessions by using a server supporting SSLv2 and EXPORT cipher suites as a Bleichenbacher RSA padding oracle. Note that traffic between clients and non-vulnerable servers can be decrypted provided another server supporting SSLv2 and EXPORT ciphers (even with a different protocol such as SMTP, IMAP or POP) shares the RSA keys of the non-vulnerable server. This vulnerability is known as DROWN (CVE-2016-0800).

You can check here: https://test.drownattack.com/?site=owncloud.com