Medium severity · published Sep 2, 2020
CVE-2020-16150
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
5.5
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
FE
Fedora · Fedoraproject
31; 32; 33 · source: NVD
MT
Mbed Tls · Arm
before 2.7.17; 2.8.0 before 2.16.8; 2.17.0 before 2.24.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-16150
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-16150
Mailing List
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5OSOFUD6UTGTDDSQRS62BPXDU52I6PUA/
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IRPBHCQKZXHVKOP5O5EWE7P76AWGUXQJ/
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OD3NM6GD73CTFFRBKG5G2ACXGG7QQHCC/
Vendor 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
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