A flaw was found in python-ipaddress. Improper input validation of octal strings in stdlib ipaddress allows unauthenticated remote attackers to perform indeterminate SSRF, RFI, and LFI attacks on many programs that rely on Python stdlib ipaddress. The highest threat from this vulnerability is to data integrity and system availability.

A flaw was found in the way the Hotspot component of OpenJDK performed range check elimination. An untrusted Java application or applet could use this flaw to bypass Java sandbox restrictions.

A flaw was found in the way the Library component of OpenJDK handled JAR files containing multiple MANIFEST.MF files. Such JAR files could cause signature verification process to return an incorrect result, possibly allowing tampering with signed JAR files. After the fix, all JAR files with multiple MANIFEST.MF files are treated as unsigned.

A flaw was found in the way the FtpClient implementation in the Networking component of OpenJDK handled responses to the FTP PASV command. A malicious FTP server could cause a Java application using FtpClient to connect to a host and port that is not accessible from the FTP server and perform port scanning or banner extraction.

The fix for this issue prevents FtpClient from connecting to hosts different form the server used for the main FTP connection. As this fix may break certain FTP deployments, a newly introduced system property jdk.net.ftp.trustPasvAddress can be used to make FtpClient connect to any host specified in the PASV command response.