CVE-2021-42143
Critical
Description
An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. An infinite loop bug exists during the handling of a ClientHello handshake message. This bug allows remote attackers to cause a denial of service by sending a malformed ClientHello handshake message with an odd length of cipher suites, which triggers an infinite loop (consuming all resources) and a buffer over-read that can disclose sensitive information.
SeverityCritical
CVSS9.1
Exploit probability—
ProductContiki-ng Tinydtls
PublishedJan 24, 2024
First seenJan 24, 2024
Weakness typeCWE-835CWE-835
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| contiki-ng tinydtls | v ≤ 2018-08-30 | — |
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