UBUNTU-CVE-2021-3450

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Source
https://ubuntu.com/security/CVE-2021-3450
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3450.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3450
Related
Published
2021-03-25T00:00:00Z
Modified
2021-03-25T00:00:00Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

The X509VFLAGX509STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509VFLAGX509STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).

References

Affected packages

Ubuntu:16.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl?arch=src?distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.2g-1ubuntu4.19

Affected versions

1.*

1.0.2d-0ubuntu1
1.0.2d-0ubuntu2
1.0.2e-1ubuntu1
1.0.2f-2ubuntu1
1.0.2g-1ubuntu2
1.0.2g-1ubuntu3
1.0.2g-1ubuntu4
1.0.2g-1ubuntu4.1
1.0.2g-1ubuntu4.2
1.0.2g-1ubuntu4.4
1.0.2g-1ubuntu4.5
1.0.2g-1ubuntu4.6
1.0.2g-1ubuntu4.8
1.0.2g-1ubuntu4.9
1.0.2g-1ubuntu4.10
1.0.2g-1ubuntu4.11
1.0.2g-1ubuntu4.12
1.0.2g-1ubuntu4.13
1.0.2g-1ubuntu4.14
1.0.2g-1ubuntu4.15
1.0.2g-1ubuntu4.16
1.0.2g-1ubuntu4.17
1.0.2g-1ubuntu4.18

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libcrypto1.0.0-udeb"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libcrypto1.0.0-udeb-dbgsym"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libssl-dev"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libssl-dev-dbgsym"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libssl-doc"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libssl1.0.0"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libssl1.0.0-dbg"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libssl1.0.0-dbgsym"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libssl1.0.0-udeb"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "libssl1.0.0-udeb-dbgsym"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "openssl"
        },
        {
            "binary_version": "1.0.2g-1ubuntu4.19",
            "binary_name": "openssl-dbgsym"
        }
    ]
}

Ubuntu:18.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.1-1ubuntu2.1~18.04.8

Affected versions

1.*

1.0.2g-1ubuntu13
1.0.2g-1ubuntu14
1.0.2n-1ubuntu1
1.1.0g-2ubuntu1
1.1.0g-2ubuntu2
1.1.0g-2ubuntu3
1.1.0g-2ubuntu4
1.1.0g-2ubuntu4.1
1.1.0g-2ubuntu4.3
1.1.1-1ubuntu2.1~18.04.1
1.1.1-1ubuntu2.1~18.04.2
1.1.1-1ubuntu2.1~18.04.3
1.1.1-1ubuntu2.1~18.04.4
1.1.1-1ubuntu2.1~18.04.5
1.1.1-1ubuntu2.1~18.04.6
1.1.1-1ubuntu2.1~18.04.7

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "binary_version": "1.1.1-1ubuntu2.1~18.04.8",
            "binary_name": "libcrypto1.1-udeb"
        },
        {
            "binary_version": "1.1.1-1ubuntu2.1~18.04.8",
            "binary_name": "libssl-dev"
        },
        {
            "binary_version": "1.1.1-1ubuntu2.1~18.04.8",
            "binary_name": "libssl-doc"
        },
        {
            "binary_version": "1.1.1-1ubuntu2.1~18.04.8",
            "binary_name": "libssl1.1"
        },
        {
            "binary_version": "1.1.1-1ubuntu2.1~18.04.8",
            "binary_name": "libssl1.1-dbgsym"
        },
        {
            "binary_version": "1.1.1-1ubuntu2.1~18.04.8",
            "binary_name": "libssl1.1-udeb"
        },
        {
            "binary_version": "1.1.1-1ubuntu2.1~18.04.8",
            "binary_name": "openssl"
        },
        {
            "binary_version": "1.1.1-1ubuntu2.1~18.04.8",
            "binary_name": "openssl-dbgsym"
        }
    ]
}

Ubuntu:18.04:LTS / openssl1.0

Package

Name
openssl1.0
Purl
pkg:deb/ubuntu/openssl1.0?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.2n-1ubuntu5.6

Affected versions

1.*

1.0.2n-1ubuntu2
1.0.2n-1ubuntu3
1.0.2n-1ubuntu4
1.0.2n-1ubuntu5
1.0.2n-1ubuntu5.1
1.0.2n-1ubuntu5.2
1.0.2n-1ubuntu5.3
1.0.2n-1ubuntu5.4
1.0.2n-1ubuntu5.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "binary_version": "1.0.2n-1ubuntu5.6",
            "binary_name": "libcrypto1.0.0-udeb"
        },
        {
            "binary_version": "1.0.2n-1ubuntu5.6",
            "binary_name": "libssl1.0-dev"
        },
        {
            "binary_version": "1.0.2n-1ubuntu5.6",
            "binary_name": "libssl1.0.0"
        },
        {
            "binary_version": "1.0.2n-1ubuntu5.6",
            "binary_name": "libssl1.0.0-dbgsym"
        },
        {
            "binary_version": "1.0.2n-1ubuntu5.6",
            "binary_name": "libssl1.0.0-udeb"
        },
        {
            "binary_version": "1.0.2n-1ubuntu5.6",
            "binary_name": "openssl1.0"
        },
        {
            "binary_version": "1.0.2n-1ubuntu5.6",
            "binary_name": "openssl1.0-dbgsym"
        }
    ]
}

Ubuntu:20.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.1f-1ubuntu2.2

Affected versions

1.*

1.1.1c-1ubuntu4
1.1.1d-2ubuntu3
1.1.1d-2ubuntu6
1.1.1f-1ubuntu1
1.1.1f-1ubuntu2
1.1.1f-1ubuntu2.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "binary_version": "1.1.1f-1ubuntu2.2",
            "binary_name": "libcrypto1.1-udeb"
        },
        {
            "binary_version": "1.1.1f-1ubuntu2.2",
            "binary_name": "libssl-dev"
        },
        {
            "binary_version": "1.1.1f-1ubuntu2.2",
            "binary_name": "libssl-doc"
        },
        {
            "binary_version": "1.1.1f-1ubuntu2.2",
            "binary_name": "libssl1.1"
        },
        {
            "binary_version": "1.1.1f-1ubuntu2.2",
            "binary_name": "libssl1.1-dbgsym"
        },
        {
            "binary_version": "1.1.1f-1ubuntu2.2",
            "binary_name": "libssl1.1-udeb"
        },
        {
            "binary_version": "1.1.1f-1ubuntu2.2",
            "binary_name": "openssl"
        },
        {
            "binary_version": "1.1.1f-1ubuntu2.2",
            "binary_name": "openssl-dbgsym"
        }
    ]
}