Several vulnerabilities have been discovered in the OpenJDK Java runtime, resulting in denial of service, insecure TLS handshakes, bypass of sandbox restrictions or HTTP response splitting attacks.
For the oldstable distribution (stretch), these problems have been fixed in version 8u252-b09-1~deb9u1.
We recommend that you upgrade your openjdk-8 packages.
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/