CVE-2021-34430

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Eclipse TinyDTLS through 0.9-rc1 relies on the rand function in the C library, which makes it easier for remote attackers to compute the master key and then decrypt DTLS traffic.

Eclipse TinyDTLS versiones hasta 0.9-rc1 se basa en la función rand de la biblioteca C, lo que facilita a atacantes remotos el cálculo de la clave maestra y luego el descifrado del tráfico DTLS

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-09 CVE Reserved
2021-07-08 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-11-10 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-326: Inadequate Encryption Strength
CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://bugs.eclipse.org/bugs/show_bug.cgi?id=568803	2024-08-04

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Eclipse Search vendor "Eclipse"		Tinydtls Search vendor "Eclipse" for product "Tinydtls"				<= 0.8.2 Search vendor "Eclipse" for product "Tinydtls" and version " <= 0.8.2"		-		Affected
Eclipse Search vendor "Eclipse"		Tinydtls Search vendor "Eclipse" for product "Tinydtls"				0.9 Search vendor "Eclipse" for product "Tinydtls" and version "0.9"		rc1		Affected