GHSA-vc8p-8pxg-rfwg: ConnectBot SSH Client Library: Excessive allocation and integer overflow in DER private-key parsing

The DER parser used for application-supplied private keys did not safely validate encoded length values before converting them to Int values or allocating arrays.

A malformed private-key file could encode a length that overflowed or wrapped around, or request an allocation much larger than the available input. This could cause parsing errors or an uncaught OutOfMemoryError, potentially terminating the application process.