• Common Security Advisory Framework (CSAF) Version 2.0
• Machine read-able data for security advisories
• Became an ISO standard recently
• Distinguish binaries and source
• Some tooling out there
  • csaf python library: https://github.com/anthonyharrison/csaf
  • CSAF perl module: https://metacpan.org/dist/CSAF

{
   "document": {
      "category": "csaf_security_advisory",
      "csaf_version": "2.0",
      "distribution": {
         "tlp": {
            "label": "WHITE",
            "url": "https://www.first.org/tlp/"
         }
      },
      "lang": "en",
      "publisher": {
         "category": "vendor",
         "name": "Debian",
         "namespace": "https://www.debian.org"
      },
      "title": "[DLA-4222-1] activemq - security update",
      "tracking": {
         "current_release_date": "2025-07-02T12:24:37",
         "generator": {
            "engine": {
               "name": "CSAF Perl Toolkit",
               "version": "0.25"
            }
         },
         "id": "DLA-4222-1",
         "initial_release_date": "2025-07-02T12:24:37",
         "revision_history": [
            {
               "date": "2025-07-02T12:24:37",
               "number": "1",
               "summary": "First release"
            }
         ],
         "status": "final",
         "version": "1.0.0"
      }
   },
   "product_tree": {
      "branches": [
         {
            "branches": [
               {
                  "branches": [
                     {
                        "category": "product_version",
                        "name": "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
                        "product": {
                           "name": "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
                           "product_id": "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
                           "product_identification_helper": {
                              "purl": "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye"
                           }
                        }
                     },
                     {
                        "category": "product_version",
                        "name": "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
                        "product": {
                           "name": "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
                           "product_id": "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
                           "product_identification_helper": {
                              "purl": "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye"
                           }
                        }
                     }
                  ],
                  "category": "architecture",
                  "name": "all"
               }
            ],
            "category": "vendor",
            "name": "Debian"
         }
      ],
      "relationships": [
         {
            "category": "default_component_of",
            "full_product_name": {
               "name": "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye as component of bullseye",
               "product_id": "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye&distro=bullseye"
            },
            "product_reference": "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
            "relates_to_product_reference": "bullseye"
         },
         {
            "category": "default_component_of",
            "full_product_name": {
               "name": "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye as component of bullseye",
               "product_id": "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye&distro=bullseye"
            },
            "product_reference": "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
            "relates_to_product_reference": "bullseye"
         }
      ]
   },
   "vulnerabilities": [
      {
         "cve": "CVE-2025-27533",
         "ids": [
            {
               "system_name": "Debian CVE page",
               "text": "https://security-tracker.debian.org/tracker/CVE-2025-27533"
            }
         ],
         "notes": [
            {
               "category": "general",
               "text": "https://issues.apache.org/jira/browse/AMQ-6596",
               "title": "Debian Security Tracker note"
            },
            {
               "category": "general",
               "text": "Fixed by https://github.com/apache/activemq/pull/1399",
               "title": "Debian Security Tracker note"
            }
         ],
         "product_status": {
            "fixed": [
               "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
               "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye"
            ],
            "recommended": [
               "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
               "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye"
            ]
         },
         "references": [
            {
               "category": "external",
               "summary": "Debian bug 1104933 for CVE-2025-27533",
               "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1104933"
            },
            {
               "category": "external",
               "summary": "CVE-2025-27533",
               "url": "https://security-tracker.debian.org/tracker/CVE-2025-27533"
            }
         ],
         "remediations": [
            {
               "category": "vendor_fix",
               "details": "To install this Debian Security Update use the Debian recommended installation methods like 'apt upgrade'.",
               "product_ids": [
                  "pkg:deb/debian/activemq@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye",
                  "pkg:deb/debian/libactivemq-java@5.16.1-1%2Bdeb11u2?arch=all&distro=bullseye"
               ]
            }
         ],
         "title": "Memory Allocation with Excessive Size Value vulnerability in Apache Ac ..."
      }
   ]
}

• Vulnerability Exploitability Exchange (VEX)
• OpenVEX is an implementation of VEX designed to be minimal, compliant, interopable, and embeddable
• Statements per CVE
• Distinguish binaries and source
• Some tooling out there
  • go-vex Golang library: https://github.com/openvex/go-vex
  • lib4vex python library: https://github.com/anthonyharrison/lib4vex

statement = product(s)             + vulnerability              + status
            │                        │                            │
            └ The software product   └ Typically a CVE related    └ One of the impact
              we are talking about     to one of the product's      statuses as identified
                                       components                   by the VEX working group.

{
  "@context": "https://openvex.dev/ns/v0.2.0",
  "@id": "https://example.com/vex/my-project-vex.json",
  "author": "MyCompany",
  "timestamp": "2024-07-22T10:30:00-00:00",
  "version": 1,
  "statements": [
    {
      "vulnerability": {
        "name": "CVE-2024-1234"
      },
      "products": [
        {
          "@id": "pkg:maven/com.example/my-library@1.2.3"
        }
      ],
      "status": "not_affected",
      "justification": "vulnerable_code_not_in_execute_path"
    },
    {
      "vulnerability": {
        "name": "CVE-2024-5678"
      },
      "products": [
        {
          "@id": "pkg:deb/debian/my-package@1.0.0-1"
        }
      ],
      "status": "fixed",
      "action": "upgrade",
      "action_statement": "Upgrade to version 1.0.1 or later.",
      "justification": "component_not_present",
      "impact_statement": "This vulnerability is not present in the version of the package used."
    }
  ]
}

• Finish PoC for OpenVEX documents generation
• Re-write the PoC for CSAF in Python
  • Current implementation in Perl (no support for VEX)
• Polish the solution to be ready to be deployed
• Host it in some Freexian server
• Publish those documents somewhere in a Freexian domain