DEBIAN-CVE-2021-36647

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Source
https://security-tracker.debian.org/tracker/CVE-2021-36647
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-36647.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-36647
Upstream
Published
2023-01-17T21:15:10.880Z
Modified
2025-11-14T04:04:17.353898Z
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

Debian:11 / mbedtls

Package

Name
mbedtls
Purl
pkg:deb/debian/mbedtls?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.16.9-0.1+deb11u1

Affected versions

2.*

2.16.9-0.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / mbedtls

Package

Name
mbedtls
Purl
pkg:deb/debian/mbedtls?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.16.11-0.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / mbedtls

Package

Name
mbedtls
Purl
pkg:deb/debian/mbedtls?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.16.11-0.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / mbedtls

Package

Name
mbedtls
Purl
pkg:deb/debian/mbedtls?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.16.11-0.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}