UBUNTU-CVE-2019-18222

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Source
https://ubuntu.com/security/CVE-2019-18222
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-18222.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2019-18222
Related
Published
2020-01-23T17:15:00Z
Modified
2025-01-13T10:22:01Z
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

The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.

References

Affected packages

Ubuntu:Pro:16.04:LTS / mbedtls

Package

Name
mbedtls
Purl
pkg:deb/ubuntu/mbedtls@2.2.1-2ubuntu0.3?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.1.2-1
2.2.0-1
2.2.1-1
2.2.1-2
2.2.1-2ubuntu0.1
2.2.1-2ubuntu0.2
2.2.1-2ubuntu0.3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / mbedtls

Package

Name
mbedtls
Purl
pkg:deb/ubuntu/mbedtls@2.8.0-1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.5.1-1ubuntu1
2.6.0-1
2.7.0-2
2.8.0-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / mbedtls

Package

Name
mbedtls
Purl
pkg:deb/ubuntu/mbedtls@2.16.4-1ubuntu2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.16.4-1ubuntu2

Affected versions

2.*

2.16.2-1
2.16.3-1

Ecosystem specific 

{
    "ubuntu_priority": "medium",
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libmbedcrypto3",
            "binary_version": "2.16.4-1ubuntu2"
        },
        {
            "binary_name": "libmbedcrypto3-dbgsym",
            "binary_version": "2.16.4-1ubuntu2"
        },
        {
            "binary_name": "libmbedtls-dev",
            "binary_version": "2.16.4-1ubuntu2"
        },
        {
            "binary_name": "libmbedtls-doc",
            "binary_version": "2.16.4-1ubuntu2"
        },
        {
            "binary_name": "libmbedtls12",
            "binary_version": "2.16.4-1ubuntu2"
        },
        {
            "binary_name": "libmbedtls12-dbgsym",
            "binary_version": "2.16.4-1ubuntu2"
        },
        {
            "binary_name": "libmbedx509-0",
            "binary_version": "2.16.4-1ubuntu2"
        },
        {
            "binary_name": "libmbedx509-0-dbgsym",
            "binary_version": "2.16.4-1ubuntu2"
        }
    ]
}