CVE-2020-16150

NameCVE-2020-16150
DescriptionA Lucky 13 timing side channel in mbedtls_ssl_decrypt_buf in library/ssl_msg.c in Trusted Firmware Mbed TLS through 2.23.0 allows an attacker to recover secret key information. This affects CBC mode because of a computed time difference based on a padding length.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3249-1
Debian Bugs972806

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mbedtls (PTS)stretch (security), stretch (lts), stretch2.4.2-1+deb9u4vulnerable
buster (security), buster, buster (lts)2.16.9-0~deb10u1fixed
bullseye2.16.9-0.1fixed
bookworm2.28.3-1fixed
sid, trixie3.6.2-3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mbedtlssourcebuster2.16.9-0~deb10u1DLA-3249-1
mbedtlssource(unstable)2.16.9-0.1972806

Notes

[stretch] - mbedtls <no-dsa> (Minor issue)
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-1

Search for package or bug name: Reporting problems