The remote Debian host is missing a security-related update.
Several vulnerabilities have been discovered in OpenJDK, an implementation of the Oracle Java platform, resulting in breakouts of the Java sandbox, information disclosur, denial of service and insecure cryptography.
Upgrade the openjdk-7 packages. For the oldstable distribution (wheezy), these problems have been fixed in version 7u95-2.6.4-1~deb7u1. For the stable distribution (jessie), these problems have been fixed in version 7u95-2.6.4-1~deb8u1.