PT-2017-17604 · Eclipse · Eclipse Tinydtls

Hamzzi + 3 · Published 2017-03-24 · Updated 2017-03-31 · CVE-2017-7243

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Eclipse tinydtls version 0.8.2

Description The issue allows remote attackers to cause a denial of service by sending a "Change cipher spec" packet without pre-handshake, resulting in a DTLS peer crash.

Recommendations For Eclipse tinydtls version 0.8.2, consider implementing a validation check to ensure that "Change cipher spec" packets are only accepted after a successful pre-handshake. As a temporary workaround, restrict incoming DTLS connections to trusted sources until a patch is available.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2017-7243

Affected Products

Eclipse Tinydtls

References · 5

• 🔥 https://github.com/k1rh4/CVE/blob/master/tinydtls · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2017-7243 · Security Note
• https://osv.dev/vulnerability/CVE-2017-7243 · Vendor Advisory
• http://securityfocus.com/bid/97193 · Note
• https://gist.github.com/k1rh4/25dcb124aef2a8a2a5f4677d64d1998b · Note