Buffer over-read in TinyDTLS

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Posted by Meng Ruijie on Jan 17

[Suggested description]
An issue was discovered in Contiki-NG tinyDTLS through 2018-08-30. Incorrect handling of over-large packets in
dtls_ccm_decrypt_message() causes a buffer over-read that can expose sensitive information.

[Vulnerability Type]
Buffer Overflow

[Vendor of Product]
https://github.com/contiki-ng/tinydtls

[Affected Product Code Base]
contiki-ng tinydtls – master branch 53a0d97

[Affected Component]
the service of dtls servers…

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