Vulnerability in Arm Mbed_tls
CVE-2021-43666
A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
EPSS: 0.022 (80.7th 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:N/I:N/A:H.
Affected products
- Arm Mbed_tls
- Debian Debian_linux — versions 10.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Third Party Advisory, Issue Tracking)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2021-43666?
- CVE-2021-43666 is a high-severity vulnerability in Arm Mbed_tls, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 7.5/10. Published 2022-03-24.
- How severe is CVE-2021-43666?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-43666 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.