Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Arm | Mbed Tls | < 2.7.17 |
| Fedoraproject | Fedora | 31 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://tls.mbed.org/tech-updates/security-advisoriesVendor Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://tls.mbed.org/tech-updates/security-advisoriesVendor Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-Vendor Advisory
FAQ
What is CVE-2020-16150?
CVE-2020-16150 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 b...
How severe is CVE-2020-16150?
CVE-2020-16150 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-16150?
Check the references section above for vendor advisories and patch information. Affected products include: Arm Mbed Tls, Fedoraproject Fedora, Debian Debian Linux.