UBUNTU-CVE-2023-6237

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Source
https://ubuntu.com/security/CVE-2023-6237
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6237.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-6237
Upstream
Downstream
Related
Published
2024-01-15T00:00:00Z
Modified
2026-04-22T14:34:51Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

Issue summary: Checking excessively long invalid RSA public keys may take a long time. Impact summary: Applications that use the function EVP_PKEY_public_check() to check RSA public keys may experience long delays. Where the key that is being checked has been obtained from an untrusted source this may lead to a Denial of Service. When function EVP_PKEY_public_check() is called on RSA public keys, a computation is done to confirm that the RSA modulus, n, is composite. For valid RSA keys, n is a product of two or more large primes and this computation completes quickly. However, if n is an overly large prime, then this computation would take a long time. An application that calls EVP_PKEY_public_check() and supplies an RSA key obtained from an untrusted source could be vulnerable to a Denial of Service attack. The function EVP_PKEY_public_check() is not called from other OpenSSL functions however it is called from the OpenSSL pkey command line application. For that reason that application is also vulnerable if used with the '-pubin' and '-check' options on untrusted data. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.

References

Affected packages

Ubuntu:22.04:LTS
openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.14?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.0.2-0ubuntu1.14

Affected versions

1.*
1.1.1l-1ubuntu1
3.*
3.0.0-1ubuntu1
3.0.1-0ubuntu1
3.0.2-0ubuntu1
3.0.2-0ubuntu1.1
3.0.2-0ubuntu1.2
3.0.2-0ubuntu1.4
3.0.2-0ubuntu1.5
3.0.2-0ubuntu1.6
3.0.2-0ubuntu1.7
3.0.2-0ubuntu1.8
3.0.2-0ubuntu1.9
3.0.2-0ubuntu1.10
3.0.2-0ubuntu1.12
3.0.2-0ubuntu1.13

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssl3",
            "binary_version": "3.0.2-0ubuntu1.14"
        },
        {
            "binary_name": "openssl",
            "binary_version": "3.0.2-0ubuntu1.14"
        }
    ],
    "priority_reason": "Upstream OpenSSL project has rated this as low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6237.json"
Ubuntu:24.04:LTS
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2@2024.02-2ubuntu0.6?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2024.02-2ubuntu0.6

Affected versions

2023.*
2023.05-2
2023.11-2
2023.11-3
2023.11-4
2023.11-5
2023.11-6
2023.11-8
2024.*
2024.02-1
2024.02-2
2024.02-2ubuntu0.1
2024.02-2ubuntu0.3
2024.02-2ubuntu0.4
2024.02-2ubuntu0.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "efi-shell-aa64",
            "binary_version": "2024.02-2ubuntu0.6"
        },
        {
            "binary_name": "efi-shell-arm",
            "binary_version": "2024.02-2ubuntu0.6"
        },
        {
            "binary_name": "efi-shell-ia32",
            "binary_version": "2024.02-2ubuntu0.6"
        },
        {
            "binary_name": "efi-shell-riscv64",
            "binary_version": "2024.02-2ubuntu0.6"
        },
        {
            "binary_name": "efi-shell-x64",
            "binary_version": "2024.02-2ubuntu0.6"
        },
        {
            "binary_name": "ovmf",
            "binary_version": "2024.02-2ubuntu0.6"
        },
        {
            "binary_name": "ovmf-ia32",
            "binary_version": "2024.02-2ubuntu0.6"
        },
        {
            "binary_name": "qemu-efi-aarch64",
            "binary_version": "2024.02-2ubuntu0.6"
        },
        {
            "binary_name": "qemu-efi-arm",
            "binary_version": "2024.02-2ubuntu0.6"
        },
        {
            "binary_name": "qemu-efi-riscv64",
            "binary_version": "2024.02-2ubuntu0.6"
        }
    ],
    "priority_reason": "Upstream OpenSSL project has rated this as low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6237.json"
openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@3.0.10-1ubuntu4?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.0.10-1ubuntu4

Affected versions

3.*
3.0.10-1ubuntu2
3.0.10-1ubuntu2.1
3.0.10-1ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssl3",
            "binary_version": "3.0.10-1ubuntu4"
        },
        {
            "binary_name": "openssl",
            "binary_version": "3.0.10-1ubuntu4"
        }
    ],
    "priority_reason": "Upstream OpenSSL project has rated this as low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6237.json"
Ubuntu:Pro:22.04:LTS
nodejs

Package

Name
nodejs
Purl
pkg:deb/ubuntu/nodejs@12.22.9~dfsg-1ubuntu3.6+esm2?arch=source&distro=esm-apps/jammy

Affected ranges

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

Affected versions

12.*
12.22.5~dfsg-5ubuntu1
12.22.7~dfsg-2ubuntu1
12.22.7~dfsg-2ubuntu3
12.22.9~dfsg-1ubuntu2
12.22.9~dfsg-1ubuntu3
12.22.9~dfsg-1ubuntu3.1
12.22.9~dfsg-1ubuntu3.2
12.22.9~dfsg-1ubuntu3.3
12.22.9~dfsg-1ubuntu3.4
12.22.9~dfsg-1ubuntu3.5
12.22.9~dfsg-1ubuntu3.6
12.22.9~dfsg-1ubuntu3.6+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnode72",
            "binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2"
        },
        {
            "binary_name": "nodejs",
            "binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2"
        }
    ],
    "priority_reason": "Upstream OpenSSL project has rated this as low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6237.json"
Ubuntu:Pro:FIPS-preview:22.04:LTS
openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.12+Fips1?arch=source&distro=fips-preview/jammy

Affected ranges

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

Affected versions

3.*
3.0.2-0ubuntu1.10+Fips1
3.0.2-0ubuntu1.12+Fips1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libssl3",
            "binary_version": "3.0.2-0ubuntu1.12+Fips1"
        },
        {
            "binary_name": "openssl",
            "binary_version": "3.0.2-0ubuntu1.12+Fips1"
        }
    ],
    "priority_reason": "Upstream OpenSSL project has rated this as low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6237.json"
Ubuntu:Pro:FIPS-updates:22.04:LTS
openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.14+Fips1?arch=source&distro=fips-updates/jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.0.2-0ubuntu1.14+Fips1

Affected versions

3.*
3.0.2-0ubuntu1.10+Fips1
3.0.2-0ubuntu1.12+Fips1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libssl3",
            "binary_version": "3.0.2-0ubuntu1.14+Fips1"
        },
        {
            "binary_name": "openssl",
            "binary_version": "3.0.2-0ubuntu1.14+Fips1"
        }
    ],
    "priority_reason": "Upstream OpenSSL project has rated this as low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6237.json"