[Heimdal-source-changes] [heimdal/heimdal] 0f8032: Allow zero-length encrypt IOVs in _krb5_evp_encryp...

[GitHub]

  Branch: refs/heads/sxw/iovec-more-fixes
  Home:   https://github.com/heimdal/heimdal
  Commit: 0f803235a0aff0132988bc4e1bd84212a7b91032
      https://github.com/heimdal/heimdal/commit/0f803235a0aff0132988bc4e1bd84212a7b91032
  Author: Simon Wilkinson <sxw at auristor.com>
  Date:   2018-09-18 (Tue, 18 Sep 2018)

  Changed paths:
    M lib/gssapi/test_context.c
    M lib/krb5/crypto-evp.c

  Log Message:
  -----------
  Allow zero-length encrypt IOVs in _krb5_evp_encrypt_iov_cts()

The iovec encryption code doesn't handle 0 length iovecs correctly.
Instead of just skipping them, _krb5_evp_encrypt_iov_cts() will spin
on the 0 length iovec.

Modify the _krb5_evp_iov_cursor_expand helper so that iovec expansion
simply skips 0 length iovecs, and make _krb5_evp_iov_cursor_nextcrypt
do the same.

Original bug report and tests from Andrew Bartlett <abartlet at samba.org>



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