Use of insecure temporary file in Horovod

Impact

The insecure tempfile.mktemp() is used when Horovod is run in an LSF job with jsrun. In that situation, a jsrun rank file is created with mktemp, which could be hijacked by another process to read or manipulate the content.

This issue does not impact the use of MPI, Gloo, Spark or Ray.

Patches

The problem has been fixed in [b96ecae4](https://github.com/horovod/horovod/commit/b96ecae4dc69fc0a83c7c2d3f1dde600c20a1b41).

Workarounds

The rank file is not created when binding_args are provided in the Settings instance.

References

Please see https://github.com/horovod/horovod/pull/3358 for details.

For more information

If you have any questions or comments about this advisory:

• Open an issue in [https://github.com/horovod/horovod](https://github.com/horovod/horovod/issues/new/choose)