UBUNTU-CVE-2023-46849

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Source
https://ubuntu.com/security/CVE-2023-46849
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46849.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-46849
Upstream
Related
Withdrawn
2025-07-18T16:54:40Z
Published
2023-11-15T00:00:00Z
Modified
2025-07-16T07:46:24.656189Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.

References

Affected packages

Ubuntu:20.04:LTS / openvpn

Package

Name
openvpn
Purl
pkg:deb/ubuntu/openvpn@2.4.7-1ubuntu2.20.04.4?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.7-1ubuntu2.20.04.4

Affected versions

2.*

2.4.7-1ubuntu2
2.4.7-1ubuntu2.20.04.2
2.4.7-1ubuntu2.20.04.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openvpn",
            "binary_version": "2.4.7-1ubuntu2.20.04.4"
        },
        {
            "binary_name": "openvpn-dbgsym",
            "binary_version": "2.4.7-1ubuntu2.20.04.4"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46849.json"

Ubuntu:22.04:LTS / openvpn

Package

Name
openvpn
Purl
pkg:deb/ubuntu/openvpn@2.5.5-1ubuntu3.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.5.5-1ubuntu3.1

Affected versions

2.*

2.5.1-3ubuntu1
2.5.1-3ubuntu2
2.5.1-3ubuntu4
2.5.1-3ubuntu5
2.5.5-1ubuntu1
2.5.5-1ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openvpn",
            "binary_version": "2.5.5-1ubuntu3.1"
        },
        {
            "binary_name": "openvpn-dbgsym",
            "binary_version": "2.5.5-1ubuntu3.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46849.json"