Multiple vulnerabilities have been identified in OpenSSL, a Secure Sockets Layer toolkit, that may result in denial of service , information leak, protocol downgrade. Additionally, a buffer overrun affecting only applications explicitly set up for SRP has been fixed . Detailed descriptions of the vulnerabilities can be found at: https://www.openssl.org/news/secadv_20140806.txt It"s important that you upgrade the libssl1.0.0 package and not just the openssl package. All applications linked to openssl need to be restarted. You can use the "checkrestart" tool from the debian-goodies package to detect affected programs. Alternatively, you may reboot your system.