| Name | CVE-2020-36476 |
| Description | An issue was discovered in Mbed TLS before 2.24.0 (and before 2.16.8 LTS and before 2.7.17 LTS). There is missing zeroization of plaintext buffers in mbedtls_ssl_read to erase unused application data from memory. |
| 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-2826-1, 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 | fixed |
| 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.
Notes
https://github.com/ARMmbed/mbedtls/commit/a321413807927d6e295cec8677733bbde6aeec34 (development)
https://github.com/ARMmbed/mbedtls/commit/ef73875913c66767e7a954aa0b68f42f0756d9b2 (mbedtls-2.7)