CVEvulnerability
CVE-2020-16150
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-09-02
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-203
Description
A 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.
Affected configurations
• arm mbed tls (< 2.7.17)
• arm mbed tls (>= 2.8.0 < 2.16.8)
• arm mbed tls (>= 2.17.0 < 2.24.0)
• fedoraproject fedora 31
• fedoraproject fedora 32
• fedoraproject fedora 33
• debian debian linux 10.0
Related
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5OSOFUD6UTGTDDSQRS62BPXDU52I6PUA/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IRPBHCQKZXHVKOP5O5EWE7P76AWGUXQJ/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OD3NM6GD73CTFFRBKG5G2ACXGG7QQHCC/ Mailing List, Third Party Advisory
- https://tls.mbed.org/tech-updates/security-advisories Vendor Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-1 Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5OSOFUD6UTGTDDSQRS62BPXDU52I6PUA/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IRPBHCQKZXHVKOP5O5EWE7P76AWGUXQJ/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OD3NM6GD73CTFFRBKG5G2ACXGG7QQHCC/ Mailing List, Third Party Advisory
- https://tls.mbed.org/tech-updates/security-advisories Vendor Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-1 Vendor Advisory