oasis-tcs · santosomar · Apr 9, 2024 · Jan 30, 2024 · Jan 30, 2024 · Jan 30, 2024
diff --git a/csaf_2.1/json_schema/csaf_json_schema.json b/csaf_2.1/json_schema/csaf_json_schema.json
@@ -1350,6 +1350,9 @@
                     }
                   ]
                 },
+                "cvss_v4": {
+                  "$ref": "https://www.first.org/cvss/cvss-v4.0.json"
+                },
                 "products": {
                   "$ref": "#/$defs/products_t"
                 }

diff --git a/csaf_2.1/prose/edit/etc/example-global-to-local.json b/csaf_2.1/prose/edit/etc/example-global-to-local.json
@@ -123,24 +123,25 @@
   "121": "branch-categories-eg-1",
   "122": "usage-of-product-version-range-eg-1",
   "123": "usage-of-v-as-version-indicator-eg-1",
-  "124": "requirement-7-provider-metadata-json-eg-1",
-  "125": "requirement-8-security-txt-eg-1",
-  "126": "requirement-9-well-known-url-for-provider-metadata-json-eg-1",
-  "127": "requirement-11-one-folder-per-year-eg-1",
-  "128": "requirement-12-index-txt-eg-1",
-  "129": "requirement-13-changes-csv-eg-1",
-  "130": "requirement-15-rolie-feed-eg-1",
-  "131": "requirement-16-rolie-service-document-eg-1",
-  "132": "requirement-17-rolie-category-document-eg-1",
-  "133": "requirement-17-rolie-category-document-eg-2",
-  "134": "requirement-17-rolie-category-document-eg-3",
-  "135": "requirement-18-integrity-eg-1",
-  "136": "requirement-18-integrity-eg-2",
-  "137": "requirement-19-signatures-eg-1",
-  "138": "requirement-21-list-of-csaf-providers-eg-1",
-  "139": "requirement-23-mirror-eg-1",
-  "140": "conformance-clause-5-cvrf-csaf-converter-eg-1",
-  "141": "conformance-clause-5-cvrf-csaf-converter-eg-2",
-  "142": "conformance-clause-5-cvrf-csaf-converter-eg-3",
-  "143": "conformance-clause-5-cvrf-csaf-converter-eg-4"
+  "124": "missing-cvss-v4-0-eg-1",
+  "126": "requirement-7-provider-metadata-json-eg-1",
+  "127": "requirement-8-security-txt-eg-1",
+  "128": "requirement-9-well-known-url-for-provider-metadata-json-eg-1",
+  "129": "requirement-11-one-folder-per-year-eg-1",
+  "120": "requirement-12-index-txt-eg-1",
+  "130": "requirement-13-changes-csv-eg-1",
+  "131": "requirement-15-rolie-feed-eg-1",
+  "132": "requirement-16-rolie-service-document-eg-1",
+  "133": "requirement-17-rolie-category-document-eg-1",
+  "134": "requirement-17-rolie-category-document-eg-2",
+  "135": "requirement-17-rolie-category-document-eg-3",
+  "136": "requirement-18-integrity-eg-1",
+  "137": "requirement-18-integrity-eg-2",
+  "138": "requirement-19-signatures-eg-1",
+  "139": "requirement-21-list-of-csaf-providers-eg-1",
+  "140": "requirement-23-mirror-eg-1",
+  "141": "conformance-clause-5-cvrf-csaf-converter-eg-1",
+  "142": "conformance-clause-5-cvrf-csaf-converter-eg-2",
+  "143": "conformance-clause-5-cvrf-csaf-converter-eg-3",
+  "144": "conformance-clause-5-cvrf-csaf-converter-eg-4"
 }
diff --git a/csaf_2.1/prose/edit/etc/example-local-to-global.json b/csaf_2.1/prose/edit/etc/example-local-to-global.json
@@ -13,10 +13,10 @@
   "branches-type-name-under-product-version-range-eg-2": "9",
   "build-metadata-in-revision-history-eg-1": "96",
   "circular-definition-of-product-id-eg-1": "51",
-  "conformance-clause-5-cvrf-csaf-converter-eg-1": "140",
-  "conformance-clause-5-cvrf-csaf-converter-eg-2": "141",
-  "conformance-clause-5-cvrf-csaf-converter-eg-3": "142",
-  "conformance-clause-5-cvrf-csaf-converter-eg-4": "143",
+  "conformance-clause-5-cvrf-csaf-converter-eg-1": "141",
+  "conformance-clause-5-cvrf-csaf-converter-eg-2": "142",
+  "conformance-clause-5-cvrf-csaf-converter-eg-3": "143",
+  "conformance-clause-5-cvrf-csaf-converter-eg-4": "144",
   "contradicting-product-status-eg-1": "54",
   "cve-in-field-ids-eg-1": "109",
   "cvss-for-fixed-products-eg-1": "111",
@@ -56,6 +56,7 @@
   "latest-document-version-eg-1": "64",
   "missing-canonical-url-eg-1": "103",
   "missing-cve-eg-1": "115",
+  "missing-cvss-v4-0-eg-1": "124",
   "missing-cwe-eg-1": "116",
   "missing-date-in-involvements-eg-1": "99",
   "missing-definition-of-product-group-id-eg-1": "52",
@@ -93,22 +94,22 @@
   "purl-eg-1": "61",
   "released-revision-history-eg-1": "66",
   "remediation-without-product-reference-eg-1": "88",
-  "requirement-11-one-folder-per-year-eg-1": "127",
-  "requirement-12-index-txt-eg-1": "128",
-  "requirement-13-changes-csv-eg-1": "129",
-  "requirement-15-rolie-feed-eg-1": "130",
-  "requirement-16-rolie-service-document-eg-1": "131",
-  "requirement-17-rolie-category-document-eg-1": "132",
-  "requirement-17-rolie-category-document-eg-2": "133",
-  "requirement-17-rolie-category-document-eg-3": "134",
-  "requirement-18-integrity-eg-1": "135",
-  "requirement-18-integrity-eg-2": "136",
-  "requirement-19-signatures-eg-1": "137",
-  "requirement-21-list-of-csaf-providers-eg-1": "138",
-  "requirement-23-mirror-eg-1": "139",
-  "requirement-7-provider-metadata-json-eg-1": "124",
-  "requirement-8-security-txt-eg-1": "125",
-  "requirement-9-well-known-url-for-provider-metadata-json-eg-1": "126",
+  "requirement-11-one-folder-per-year-eg-1": "128",
+  "requirement-12-index-txt-eg-1": "129",
+  "requirement-13-changes-csv-eg-1": "130",
+  "requirement-15-rolie-feed-eg-1": "131",
+  "requirement-16-rolie-service-document-eg-1": "132",
+  "requirement-17-rolie-category-document-eg-1": "133",
+  "requirement-17-rolie-category-document-eg-2": "134",
+  "requirement-17-rolie-category-document-eg-3": "135",
+  "requirement-18-integrity-eg-1": "136",
+  "requirement-18-integrity-eg-2": "137",
+  "requirement-19-signatures-eg-1": "138",
+  "requirement-21-list-of-csaf-providers-eg-1": "139",
+  "requirement-23-mirror-eg-1": "140",
+  "requirement-7-provider-metadata-json-eg-1": "125",
+  "requirement-8-security-txt-eg-1": "126",
+  "requirement-9-well-known-url-for-provider-metadata-json-eg-1": "127",
   "revision-history-entries-for-pre-release-versions-eg-1": "67",
   "sorted-revision-history-eg-1": "62",
   "spell-check-eg-1": "120",

diff --git a/csaf_2.1/prose/edit/etc/section-display-to-label.json b/csaf_2.1/prose/edit/etc/section-display-to-label.json
@@ -191,6 +191,7 @@
   "6.3.9": "branch-categories",
   "6.3.10": "usage-of-product-version-range",
   "6.3.11": "usage-of-v-as-version-indicator",
+  "6.3.12": "missing-cvss-v4-0",
   "7": "distributing-csaf-documents",
   "7.1": "requirements",
   "7.1.1": "requirement-1-valid-csaf-document",

diff --git a/csaf_2.1/prose/edit/etc/section-label-to-display.json b/csaf_2.1/prose/edit/etc/section-label-to-display.json
@@ -112,6 +112,7 @@
   "mandatory-tests": "6.1",
   "missing-canonical-url": "6.2.11",
   "missing-cve": "6.3.3",
+  "missing-cvss-v4-0": "6.3.12",
   "missing-cwe": "6.3.4",
   "missing-date-in-involvements": "6.2.7",
   "missing-definition-of-product-group-id": "6.1.4",

diff --git a/csaf_2.1/prose/edit/src/additional-conventions.md b/csaf_2.1/prose/edit/src/additional-conventions.md
@@ -47,4 +47,28 @@ they MUST be separated by the Record Separator in accordance with [cite](#RFC746
 
 The keys within a CSAF document SHOULD be sorted alphabetically.
 
+## Usage of Markdown
+
+The use of GitHub-flavoured Markdown is permitted in the following fields:
+
+```
+  /document/acknowledgments[]/summary
+  /document/distribution/text
+  /document/notes[]/text
+  /document/publisher/issuing_authority
+  /document/references[]/summary
+  /document/tracking/revision_history[]/summary
+  /product_tree/product_groups[]/summary
+  /vulnerabilities[]/acknowledgments[]/summary
+  /vulnerabilities[]/involvements[]/summary
+  /vulnerabilities[]/notes[]/text
+  /vulnerabilities[]/references[]/summary
+  /vulnerabilities[]/remediations[]/details
+  /vulnerabilities[]/remediations[]/entitlements[]
+  /vulnerabilities[]/remediations[]/restart_required/details
+  /vulnerabilities[]/threats[]/details
+```
+
+Other fields MUST NOT contain Markdown.
+
 -------
diff --git a/csaf_2.1/prose/edit/src/conformance.md b/csaf_2.1/prose/edit/src/conformance.md
@@ -50,6 +50,7 @@ The entities ("conformance targets") for which this document defines requirement
 * **CSAF full validator**: A CSAF extended validator that additionally performs informative tests.
 * **CSAF SBOM matching system**: A program that connects to or is an SBOM database and is able to manage CSAF documents as required
   by CSAF management system as well as matching them to SBOM components of the SBOM database.
+* **CSAF 2.0 to CSAF 2.1 converter**: A CSAF producer which takes a CSAF 2.0 document as input and converts it into a valid CSAF 2.1 document.
 
 ### Conformance Clause 1: CSAF document
 
@@ -135,6 +136,8 @@ Secondly, the program fulfills the following for all items of:
   `first_affected` and `last_affected` into `product_ids`.
   If none of these arrays exist, the CVRF CSAF converter outputs an error that no matching Product ID was found for this remediation element.
 * `/vulnerabilities[]/scores[]`:
+  * For any CVSS v4 element, the CVRF CSAF converter MUST compute the `baseSeverity` from the `baseScore` according to
+    the rules of the applicable CVSS standard. (CSAF CVRF v1.2 predates CVSS v4.0.)
   * For any CVSS v3 element, the CVRF CSAF converter MUST compute the `baseSeverity` from the `baseScore` according to
     the rules of the applicable CVSS standard.
   * If no `product_id` is given, the CVRF CSAF converter appends all Product IDs which are listed under `../product_status` in
@@ -145,7 +148,8 @@ Secondly, the program fulfills the following for all items of:
     A CVRF CSAF converter MAY offer a configuration option to delete such elements.
   * If there are CVSS v3.0 and CVSS v3.1 Vectors available for the same product, the CVRF CSAF converter discards
     the CVSS v3.0 information and provide in CSAF only the CVSS v3.1 information.
-  * To determine, which minor version of CVSS v3 is used, the CVRF CSAF converter uses the following steps:
+  * To determine, which minor version of CVSS v3 is used and to evaluate a CVSS v4 that was wrongly inserted in a CVSS v3 element,
+    the CVRF CSAF converter uses the following steps:
     1. Retrieve the CVSS version from the CVSS vector, if present.
 
         *Example 1:*
@@ -486,4 +490,19 @@ A CSAF SBOM matching system satisfies the "CSAF SBOM matching system" conformanc
   * matching that CSAF document at all
   * marked with a given status
 
+### Conformance Clause 18: CSAF 2.0 to CSAF 2.1 converter
+
+A program satisfies the "CSAF 2.0 to CSAF 2.1 converter" conformance profile if the program fulfills the following two groups of requirements:
+
+Firstly, the program:
+
+* satisfies the "CSAF producer" conformance profile.
+* takes only CSAF 2.0 documents as input.
+* additionally satisfies the normative requirements given below.
+
+Secondly, the program fulfills the following for all items of:
+
+
+> A tool MAY implement options to convert other Markdown formats to GitHub-flavoured Markdown.
+
 -------
diff --git a/csaf_2.1/prose/edit/src/design-considerations-01-construction-principles.md b/csaf_2.1/prose/edit/src/design-considerations-01-construction-principles.md
@@ -37,6 +37,8 @@ Delegation to industry best practices technologies is used in referencing schema
 * Platform Data:
   * Common Platform Enumeration (CPE) Version 2.3 [cite](#CPE23-N)
 * Vulnerability Scoring:
+  * Common Vulnerability Scoring System (CVSS) Version 4.0 [cite](#CVSS40)
+    * JSON Schema Reference https://www.first.org/cvss/cvss-v4.0.json
   * Common Vulnerability Scoring System (CVSS) Version 3.1 [cite](#CVSS31)
     * JSON Schema Reference https://www.first.org/cvss/cvss-v3.1.json
   * Common Vulnerability Scoring System (CVSS) Version 3.0 [cite](#CVSS30)

diff --git a/csaf_2.1/prose/edit/src/distributing.md b/csaf_2.1/prose/edit/src/distributing.md
@@ -171,8 +171,8 @@ value of `/document/tracking/initial_release_date`.
 *Examples 1:*
 
 ```
-2021
-2020
+2024
+2023
 ```
 
 ### Requirement 12: index.txt
@@ -182,9 +182,10 @@ The index.txt file within MUST provide a list of all filenames of CSAF documents
 *Example 1:*
 
 ```
-2020/example_company_-_2020-yh4711.json
-2019/example_company_-_2019-yh3234.json
-2018/example_company_-_2018-yh2312.json
+2023/esa-2023-09953.json
+2022/esa-2022-02723.json
+2021/esa-2021-31916.json
+2021/esa-2021-03676.json
 ```
 
 > This can be used to download all CSAF documents.
@@ -197,10 +198,10 @@ CSAF document in the sub-directories without a heading; lines MUST be sorted by
 *Example 1:*
 
 ```
-"2020/example_company_-_2020-yh4711.json","2020-07-01T10:09:07Z"
-"2018/example_company_-_2018-yh2312.json","2020-07-01T10:09:01Z"
-"2019/example_company_-_2019-yh3234.json","2019-04-17T15:08:41Z"
-"2018/example_company_-_2018-yh2312.json","2019-03-01T06:01:00Z"
+"2023/esa-2023-09953.json","2023-07-01T10:09:07Z"
+"2021/esa-2021-03676.json","2023-07-01T10:09:01Z"
+"2022/esa-2022-02723.json","2022-04-17T15:08:41Z"
+"2021/esa-2021-31916.json","2022-03-01T06:01:00Z"
 ```
 
 ### Requirement 14: Directory listings
@@ -388,9 +389,9 @@ MD5 and SHA1 SHOULD NOT be used.
 *Example 1:*
 
 ```
-File name of CSAF document: example_company_-_2019-yh3234.json
-File name of SHA-256 hash file: example_company_-_2019-yh3234.json.sha256
-File name of SHA-512 hash file: example_company_-_2019-yh3234.json.sha512
+File name of CSAF document: esa-2022-02723.json
+File name of SHA-256 hash file: esa-2022-02723.json.sha256
+File name of SHA-512 hash file: esa-2022-02723.json.sha512
 ```
 
 The file content SHALL start with the first byte of the hexadecimal hash value.
@@ -399,7 +400,7 @@ Any subsequent data (like a filename) which is optional SHALL be separated by at
 *Example 2:*
 
 ```
-ea6a209dba30a958a78d82309d6cdcc6929fcb81673b3dc4d6b16fac18b6ff38  example_company_-_2019-yh3234.json
+ea6a209dba30a958a78d82309d6cdcc6929fcb81673b3dc4d6b16fac18b6ff38  esa-2022-02723.json
 ```
 
 If a ROLIE feed exists, each hash file MUST be listed in it as described in requirement 15.
@@ -412,8 +413,8 @@ extended by the appropriate extension. See [cite](#RFC4880) for more details.
 *Example 1:*
 
 ```
-File name of CSAF document: example_company_-_2019-yh3234.json
-File name of signature file: example_company_-_2019-yh3234.json.asc
+File name of CSAF document: esa-2022-02723.json
+File name of signature file: esa-2022-02723.json.asc
 ```
 
 If a ROLIE feed exists, each signature file MUST be listed in it as described in requirement 15.

diff --git a/csaf_2.1/prose/edit/src/frontmatter.md b/csaf_2.1/prose/edit/src/frontmatter.md
@@ -7,7 +7,7 @@
 
 ## Committee Specification Draft 01
 
-## ?? Month 2024
+## 28 February 2024
 
 #### This stage:
 https://docs.oasis-open.org/csaf/csaf/v2.1/csd01/csaf-v2.1-csd01.md (Authoritative) \
@@ -71,7 +71,7 @@ When referencing this specification the following citation format should be used
 
 **[csaf-v2.1]**
 
-_Common Security Advisory Framework Version 2.1_. Edited by Stefan Hagen, and Thomas Schmidt. ?? Month 2024. OASIS Standard. https://docs.oasis-open.org/csaf/csaf/v2.1/csd01/csaf-v2.1-csd01.html. Latest stage: https://docs.oasis-open.org/csaf/csaf/v2.1/csaf-v2.1.html.
+_Common Security Advisory Framework Version 2.1_. Edited by Stefan Hagen, and Thomas Schmidt. 28 February 2024. OASIS Committee Specification Draft 01. https://docs.oasis-open.org/csaf/csaf/v2.1/csd01/csaf-v2.1-csd01.html. Latest stage: https://docs.oasis-open.org/csaf/csaf/v2.1/csaf-v2.1.html.
 
 
 -------

diff --git a/csaf_2.1/prose/edit/src/guidance-on-size.md b/csaf_2.1/prose/edit/src/guidance-on-size.md
@@ -36,8 +36,9 @@ All _CSAF producers_ SHOULD NOT produce CSAF documents which exceed those limits
 ## File size
 
 A CSAF document in the specified JSON format encoded in UTF-8 SHOULD conform to known size limits of current technologies parsing JSON content,
-e.g.: 15 MB.
+e.g.: 50 MiB.
 
+> The CSAF documents observed in the wild expose strongly varying sizes as per the use cases they serve.
 > At least one database technology in wide use for storing CSAF documents rejects insert attempts when
 > the transformed BSON size exceeds 16 megabytes.
 > The BSON format optimizes for accessibility and not size.
@@ -211,6 +212,7 @@ A string SHOULD NOT have a length greater than:
   * `/vulnerabilities[]/remediations[]/product_ids[]`
   * `/vulnerabilities[]/scores[]/cvss_v2/vectorString`
   * `/vulnerabilities[]/scores[]/cvss_v3/vectorString`
+  * `/vulnerabilities[]/scores[]/cvss_v4/vectorString`
   * `/vulnerabilities[]/scores[]/products[]`
   * `/vulnerabilities[]/threats[]/group_ids[]`
   * `/vulnerabilities[]/threats[]/product_ids[]`
@@ -337,6 +339,42 @@ It seems to be safe to assume that the length of each value is not greater than
 * `/vulnerabilities[]/scores[]/cvss_v3/modifiedIntegrityImpact` (11)
 * `/vulnerabilities[]/scores[]/cvss_v3/modifiedAvailabilityImpact` (11)
 * `/vulnerabilities[]/scores[]/cvss_v3/environmentalSeverity` (8)
+* `/vulnerabilities[]/scores[]/cvss_v4/version` (3)
+* `/vulnerabilities[]/scores[]/cvss_v4/attackVector` (8)
+* `/vulnerabilities[]/scores[]/cvss_v4/attackComplexity` (4)
+* `/vulnerabilities[]/scores[]/cvss_v4/attackRequirements` (7)
+* `/vulnerabilities[]/scores[]/cvss_v4/privilegesRequired` (4)
+* `/vulnerabilities[]/scores[]/cvss_v4/userInteraction` (7)
+* `/vulnerabilities[]/scores[]/cvss_v4/vulnConfidentialityImpact` (4)
+* `/vulnerabilities[]/scores[]/cvss_v4/vulnIntegrityImpact` (4)
+* `/vulnerabilities[]/scores[]/cvss_v4/vulnAvailabilityImpact` (4)
+* `/vulnerabilities[]/scores[]/cvss_v4/subConfidentialityImpact` (4)
+* `/vulnerabilities[]/scores[]/cvss_v4/subIntegrityImpact` (4)
+* `/vulnerabilities[]/scores[]/cvss_v4/subAvailabilityImpact` (4)
+* `/vulnerabilities[]/scores[]/cvss_v4/exploitMaturity` (16)
+* `/vulnerabilities[]/scores[]/cvss_v4/confidentialityRequirement` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/integrityRequirement` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/availabilityRequirement` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedAttackVector` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedAttackComplexity` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedAttackRequirements` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedPrivilegesRequired` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedUserInteraction` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedVulnConfidentialityImpact` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedVulnIntegrityImpact` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedVulnAvailabilityImpact` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedSubConfidentialityImpact` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedSubIntegrityImpact` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/modifiedSubAvailabilityImpact` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/Safety` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/Automatable` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/Recovery` (13)
+* `/vulnerabilities[]/scores[]/cvss_v4/valueDensity` (12)
+* `/vulnerabilities[]/scores[]/cvss_v4/vulnerabilityResponseEffort` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/providerUrgency` (11)
+* `/vulnerabilities[]/scores[]/cvss_v4/baseSeverity` (8)
+* `/vulnerabilities[]/scores[]/cvss_v4/threatSeverity` (8)
+* `/vulnerabilities[]/scores[]/cvss_v4/environmentalSeverity` (8)
 * `/vulnerabilities[]/threats[]/category` (14)
 
 ## Date

diff --git a/csaf_2.1/prose/edit/src/introduction-02-terminology-glossary.md b/csaf_2.1/prose/edit/src/introduction-02-terminology-glossary.md
@@ -20,6 +20,9 @@ _Examples_: A physical file in a file system such as a source file, an object fi
 a specific version of a file in a version control system; a database table accessed via an HTTP request;
 an arbitrary stream of bytes returned from an HTTP request, a product URL, a common product enumeration value.
 
+CSAF 2.0 to CSAF 2.1 converter
+:    A CSAF producer which takes a CSAF 2.0 document as input and converts it into a valid CSAF 2.1 document.
+
 CSAF asset matching system
 :    program that connects to or is an asset database and is able to manage CSAF documents as
 required by CSAF management system