Vulnerability · Published Mar 24, 2022 · Assigned by mitre
CVE-2021-43666
High 7.5
In plain English
A high-severity security flaw in the mbedtls package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.1%top 18.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mbedtls | 2.28.0-1 | DEBIAN-CVE-2021-43666 |
| Debian:13 | mbedtls | 2.28.0-1 | DEBIAN-CVE-2021-43666 |
| Debian:14 | mbedtls | 2.28.0-1 | DEBIAN-CVE-2021-43666 |
Affected products (as reported)
Weakness: CWE-130 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H