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  1. Libmongocrypt
  2. MONGOCRYPT-242

libmongocrypt aborts when mongocrypt_ctx_decrypt_init is called with empty bson string

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    • Type: Icon: Bug Bug
    • Resolution: Unresolved
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
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      It appears that if mongocrypt_ctx_decrypt_init is called with an empty string as the bson buffer, the result is a BSON_ASSERT failure. In Ruby driver test suite this produces:

      (byebug) mongocrypt_ctx_decrypt_init(context.ctx_p, data_p)
/data/mci/dd0591b7a0680c7f9aceb9cc30394457/libmongocrypt/src/mongocrypt-buffer.c:38 _make_owned(): precondition failed: buf->data

      I also wrote a C program at https://github.com/p-mongo/tests/blob/master/lmc-empty-bson/test-empty-bson.c which produces:

      speed% ./test-empty-bson 
/data/mci/b36facda8d87bede21e55b88e924c257/libmongocrypt/src/mongocrypt-buffer.c:38 _make_owned(): precondition failed: buf->data
zsh: abort      ./test-empty-bson

      libmongocrypt should handle empty bson string in a more graceful way, such as by returning an ordinary error to the caller in this case.

            Assignee:
            Unassigned Unassigned
            Reporter:
            oleg.pudeyev@mongodb.com Oleg Pudeyev (Inactive)
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              Created:
              Updated: