| Name | CVE-2021-43666 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| NVD severity | medium |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| mbedtls (PTS) | stretch | 2.4.2-1+deb9u3 | vulnerable |
| stretch (security) | 2.4.2-1+deb9u4 | vulnerable | |
| buster | 2.16.0-1 | vulnerable | |
| bullseye | 2.16.9-0.1 | vulnerable | |
| bookworm, sid | 2.28.0-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| mbedtls | source | (unstable) | 2.28.0-1 |
https://github.com/ARMmbed/mbedtls/issues/5136
Backport 2.16: https://github.com/ARMmbed/mbedtls/pull/5311