What is CVE-2021-34430?

CVE-2021-34430 is a high-severity vulnerability in Eclipse Tinydtls, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 7.5/10. Published 2021-07-08.

How severe is CVE-2021-34430?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Eclipse Tinydtls

CVE-2021-34430

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.

EPSS: 0.010 (60.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Eclipse Tinydtls — versions 0.9
The Eclipse Foundation Tinydtls — versions unspecified

Weakness classification (CWE)

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

References

emo@eclipse.org (x_refsource_CONFIRM, Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2021-34430?: CVE-2021-34430 is a high-severity vulnerability in Eclipse Tinydtls, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 7.5/10. Published 2021-07-08.
How severe is CVE-2021-34430?: High severity. CVSS v3 base score is 7.5 out of 10.