github - ghsa-ff3x-q8pg-rh37

GHSA-FF3X-Q8PG-RH37

Vulnerability from github – Published: 2024-02-15 18:30 – Updated: 2024-02-15 18:30

Details

wolfSSL prior to 5.6.6 did not check that messages in one (D)TLS record do not span key boundaries. As a result, it was possible to combine (D)TLS messages using different keys into one (D)TLS record. The most extreme edge case is that, in (D)TLS 1.3, it was possible that an unencrypted (D)TLS 1.3 record from the server containing first a ServerHello message and then the rest of the first server flight would be accepted by a wolfSSL client. In (D)TLS 1.3 the handshake is encrypted after the ServerHello but a wolfSSL client would accept an unencrypted flight from the server. This does not compromise key negotiation and authentication so it is assigned a low severity rating.

Severity ?

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2023-6937"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-15T18:15:44Z",
    "severity": "MODERATE"
  },
  "details": "wolfSSL prior to 5.6.6 did not check that messages in one (D)TLS record do not span key boundaries. As a result, it was possible to combine (D)TLS messages using different keys into one (D)TLS record. The most extreme edge case is that, in (D)TLS 1.3, it was possible that an unencrypted (D)TLS 1.3 record from the server containing first a ServerHello message and then the rest of the first server flight would be accepted by a wolfSSL client. In (D)TLS 1.3 the handshake is encrypted after the ServerHello but a wolfSSL client would accept an unencrypted flight from the server. This does not compromise key negotiation and authentication so it is assigned a low severity rating.",
  "id": "GHSA-ff3x-q8pg-rh37",
  "modified": "2024-02-15T18:30:41Z",
  "published": "2024-02-15T18:30:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6937"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wolfSSL/wolfssl/pull/7029"
    },
    {
      "type": "WEB",
      "url": "https://www.wolfssl.com/docs/security-vulnerabilities"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-6937 (GCVE-0-2023-6937)

Vulnerability from cvelistv5 – Published: 2024-02-15 17:21 – Updated: 2025-04-24 15:13

Summary

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-20 - Improper Input Validation

Assigner

wolfSSL

References

URL

Tags

	https://github.com/wolfSSL/wolfssl/pull/7029	patch
	https://www.wolfssl.com/docs/security-vulnerabilities/	vendor-advisory

Impacted products

	Vendor	Product	Version
	wolfSSL	wolfSSL	Affected: 0 , ≤ 5.6.4 (release bundle)

Credits

Johannes Wilson from Sectra Communications and Linköping University

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:wolfssl:wolfssl:-:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "wolfssl",
            "vendor": "wolfssl",
            "versions": [
              {
                "lessThanOrEqual": "5.64",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
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            "other": {
              "content": {
                "id": "CVE-2023-6937",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-24T15:13:21.405337Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-24T15:13:34.315Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T08:42:08.518Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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            "tags": [
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            "url": "https://github.com/wolfSSL/wolfssl/pull/7029"
          },
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            "tags": [
              "vendor-advisory",
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            ],
            "url": "https://www.wolfssl.com/docs/security-vulnerabilities/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "modules": [
            "(D)TLS"
          ],
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          "repo": "https://github.com/wolfSSL/wolfssl",
          "vendor": "wolfSSL",
          "versions": [
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              "status": "affected",
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      ],
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      "impacts": [
        {
          "capecId": "CAPEC-272",
          "descriptions": [
            {
              "lang": "en",
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "baseScore": 5.3,
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            "userInteraction": "NONE",
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      "providerMetadata": {
        "dateUpdated": "2024-02-15T17:21:44.342Z",
        "orgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27",
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      "references": [
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            }
          ],
          "value": "The fix for this issue is located in the following GitHub Pull Request:  https://github.com/wolfSSL/wolfssl/pull/7029 https://github.com/wolfSSL/wolfssl/pull/7029 .\n\n"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Improper (D)TLS key boundary enforcement",
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  "cveMetadata": {
    "assignerOrgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27",
    "assignerShortName": "wolfSSL",
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    "datePublished": "2024-02-15T17:21:44.342Z",
    "dateReserved": "2023-12-18T22:03:02.400Z",
    "dateUpdated": "2025-04-24T15:13:34.315Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-FF3X-Q8PG-RH37

CVE-2023-6937 (GCVE-0-2023-6937)

Tags

Sightings

Nomenclature