UBUNTU-CVE-2023-24021

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Source
https://ubuntu.com/security/CVE-2023-24021
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-24021.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-24021
Upstream
Downstream
Related
Published
2023-01-20T19:15:00Z
Modified
2025-07-18T16:54:21Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the FILESTMPCONTENT collection.

References

Affected packages

Ubuntu:Pro:16.04:LTS / modsecurity-apache

Package

Name
modsecurity-apache
Purl
pkg:deb/ubuntu/modsecurity-apache@2.9.0-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.0-1ubuntu0.1~esm1

Affected versions

2.*

2.9.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-security2",
            "binary_version": "2.9.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libapache2-mod-security2-dbgsym",
            "binary_version": "2.9.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libapache2-modsecurity",
            "binary_version": "2.9.0-1ubuntu0.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:Pro:18.04:LTS / modsecurity-apache

Package

Name
modsecurity-apache
Purl
pkg:deb/ubuntu/modsecurity-apache@2.9.2-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.2-1ubuntu0.1~esm1

Affected versions

2.*

2.9.1-3
2.9.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-security2",
            "binary_version": "2.9.2-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libapache2-mod-security2-dbgsym",
            "binary_version": "2.9.2-1ubuntu0.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:20.04:LTS / modsecurity-apache

Package

Name
modsecurity-apache
Purl
pkg:deb/ubuntu/modsecurity-apache@2.9.3-1ubuntu0.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.3-1ubuntu0.1

Affected versions

2.*

2.9.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-security2",
            "binary_version": "2.9.3-1ubuntu0.1"
        },
        {
            "binary_name": "libapache2-mod-security2-dbgsym",
            "binary_version": "2.9.3-1ubuntu0.1"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS / modsecurity-apache

Package

Name
modsecurity-apache
Purl
pkg:deb/ubuntu/modsecurity-apache@2.9.5-1?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*

2.9.3-3
2.9.5-1

Ubuntu:Pro:22.04:LTS / modsecurity-apache

Package

Name
modsecurity-apache
Purl
pkg:deb/ubuntu/modsecurity-apache@2.9.5-1ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.5-1ubuntu0.1~esm1

Affected versions

2.*

2.9.3-3
2.9.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-security2",
            "binary_version": "2.9.5-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libapache2-mod-security2-dbgsym",
            "binary_version": "2.9.5-1ubuntu0.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}