Vulnerability Details : 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.
Vulnerability category: Denial of service
Products affected by CVE-2021-43666
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43666
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 45 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43666
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
References for CVE-2021-43666
-
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
[SECURITY] [DLA 3249-1] mbedtls security updateMailing List;Third Party Advisory
-
https://github.com/ARMmbed/mbedtls/issues/5136
mbedtls_pkcs12_derivation() can't exit when the input password length is 0. · Issue #5136 · ARMmbed/mbedtls · GitHubExploit;Issue Tracking;Third Party Advisory
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