Vulnerability · Published Jul 19, 2021 · Assigned by mitre
CVE-2020-36423
High 7.5
In plain English
A high-severity security flaw in the mbedtls package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.2%top 31.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in Arm Mbed TLS before 2.23.0. A remote attacker can recover plaintext because a certain Lucky 13 countermeasure doesn't properly consider the case of a hardware accelerator.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mbedtls | 2.16.9-0.1 | DEBIAN-CVE-2020-36423 |
| Debian:13 | mbedtls | 2.16.9-0.1 | DEBIAN-CVE-2020-36423 |
| Debian:14 | mbedtls | 2.16.9-0.1 | DEBIAN-CVE-2020-36423 |