CVE-2021-36647
- Source
- https://cve.org/CVERecord?id=CVE-2021-36647
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-36647.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-36647
- Downstream
- Published
- 2023-01-17T21:15:10.880Z
- Modified
- 2026-03-15T22:38:32.949717Z
- Severity
-
- 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Use of a Broken or Risky Cryptographic Algorithm in the function mbedtlsmpiexp_mod() in lignum.c in Mbed TLS Mbed TLS all versions before 3.0.0, 2.27.0 or 2.16.11 allows attackers with access to precise enough timing and memory access information (typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world) to recover the private keys used in RSA.
- References
Affected packages
Git / github.com/armmbed/mbedtls
Affected ranges
- Type
- GIT
- Repo
- https://github.com/armmbed/mbedtls
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixedIntroducedFixed
- Database specific
{ "versions": [ { "introduced": "0" }, { "fixed": "2.16.11" }, { "introduced": "2.17.0" }, { "fixed": "2.27.0" }, { "introduced": "2.28.0" }, { "fixed": "3.0.0" } ] }
Affected versions
mbedtls-2.*
mbedtls-2.17.0
mbedtls-2.18.0
mbedtls-2.19.0
mbedtls-2.19.0d1
mbedtls-2.19.0d2
mbedtls-2.19.1
mbedtls-2.20.0
mbedtls-2.20.0d0
mbedtls-2.20.0d1
mbedtls-2.21.0
mbedtls-2.22.0
mbedtls-2.22.0d0
mbedtls-2.23.0
mbedtls-2.24.0
mbedtls-2.25.0
mbedtls-2.26.0
v2.*
v2.23.0
v2.24.0
v2.25.0
v2.26.0