Vulnerability · Published Jul 19, 2021 · Assigned by mitre
CVE-2020-36424
Medium 4.7
In plain English
A medium-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 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.7Medium
Exploit odds (30 days)0.4%top 71.2% 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 2.24.0. An attacker can recover a private key (for RSA or static Diffie-Hellman) via a side-channel attack against generation of base blinding/unblinding values.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mbedtls | 2.16.9-0.1 | DEBIAN-CVE-2020-36424 |
| Debian:13 | mbedtls | 2.16.9-0.1 | DEBIAN-CVE-2020-36424 |
| Debian:14 | mbedtls | 2.16.9-0.1 | DEBIAN-CVE-2020-36424 |
Affected products (as reported)
References
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-2
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
- https://bugs.gentoo.org/740108
- [debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update mailing-list