| Name | CVE-2020-36421 |
| Description | An issue was discovered in Arm Mbed TLS before 2.23.0. Because of a side channel in modular exponentiation, an RSA private key used in a secure enclave could be disclosed. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3249-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| mbedtls (PTS) | stretch (security), stretch (lts), stretch | 2.4.2-1+deb9u4 | vulnerable |
| buster | 2.16.0-1 | vulnerable |
| buster (security) | 2.16.9-0~deb10u1 | fixed |
| bullseye | 2.16.9-0.1 | fixed |
| bookworm | 2.28.3-1 | fixed |
| trixie | 2.28.7-1 | fixed |
| sid | 2.28.8-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| mbedtls | source | buster | 2.16.9-0~deb10u1 | | DLA-3249-1 | |
| mbedtls | source | (unstable) | 2.16.9-0.1 | | | |
Notes
[stretch] - mbedtls <no-dsa> (Minor issue)
https://github.com/ARMmbed/mbedtls/issues/3394