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Contiki-NG tinyDTLS dtls_ccm_decrypt_message() Buffer Overread

Contiki-NG tinyDTLS dtls_ccm_decrypt_message() Buffer Overread
Posted Jan 18, 2024
Authored by jerrytesting

An issue was discovered in Contiki-NG tinyDTLS versions 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.

tags | advisory
advisories | CVE-2021-42144
SHA-256 | fcd7f90fba43be1f60b391164b0ba2a0e19f793b3291f3ea45d6c373dadd81b8

Contiki-NG tinyDTLS dtls_ccm_decrypt_message() Buffer Overread

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[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

[Attack Type]
Remote

[Impact Code execution]
true

[Impact Denial of Service]
true

[Reference]
https://github.com/contiki-ng/tinydtls/issues/23

[Discoverer]
jerrytesting

[CVE Reference]
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2021-42144 to this vulnerability.

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