ext/mysqlnd/mysqlnd_auth.c: Add error handling for invalid public key… #18663
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… size Reported-by: Pavel Nekrasov <p.nekrasov@fobos-nt.ru> Signed-off-by: Andrey Kovalev <ded@altlinux.org>
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bukka
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Jun 2, 2025
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Just to clarify this is very unlikely to ever happen - it would have to be some buggy engine / provider maybe but even then I'm not sure if it's possible to fail on size here. The key is read from PEM using PEM_read_bio_PUBKEY so it should always provide a key that returns size. Anyway it won't probably hurt to do the check but no backport needed for this.
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| int pkey_size = EVP_PKEY_size(server_public_key); | ||
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| if (pkey_size <= 0) { |
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it's not issue to keep it like that if API ever changed but just to be clear that this will never overflow with the current OpenSSL versions. If it was 0, it would also fail on password check.
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… size
Reported-by: Pavel Nekrasov p.nekrasov@fobos-nt.ru