Vulnerability-Lookup

FKIE_CVE-2021-38427

Vulnerability from fkie_nvd - Published: 2022-05-05 17:15 - Updated: 2026-06-17 04:02

Severity

6.6 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code.

References

URL	Tags
ics-cert@hq.dhs.gov	https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F	Permissions Required, Vendor Advisory
ics-cert@hq.dhs.gov	https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02	Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108	https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F	Permissions Required, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02	Third Party Advisory, US Government Resource

Impacted products

	Vendor	Product	Version
	rti	connext_professional	*
	rti	connext_secure	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Connext DDS Professional",
          "vendor": "RTI",
          "versions": [
            {
              "lessThanOrEqual": "6.1.0",
              "status": "affected",
              "version": "4.2x",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Connext DDS Secure",
          "vendor": "RTI",
          "versions": [
            {
              "lessThanOrEqual": "6.1.0",
              "status": "affected",
              "version": "4.2x",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "ics-cert@hq.dhs.gov"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "59534F50-E21C-484E-9BF3-4B51FD2A3DDE",
              "versionEndIncluding": "6.1.0",
              "versionStartIncluding": "4.2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:rti:connext_secure:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2357CC38-6BC3-4DBB-91D0-DEC399B70277",
              "versionEndIncluding": "6.1.0",
              "versionStartIncluding": "4.2.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code."
    },
    {
      "lang": "es",
      "value": "RTI Connext DDS Professional y Connext DDS Secure versiones 4.2.x a 6.1.0, son vulnerables a un desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria, que puede permitir a un atacante local ejecutar c\u00f3digo arbitrario"
    }
  ],
  "id": "CVE-2021-38427",
  "lastModified": "2026-06-17T04:02:04.690",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 4.7,
        "source": "ics-cert@hq.dhs.gov",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
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            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-04-16T15:52:42.432584Z",
          "version": "2.0.3"
        }
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    ]
  },
  "published": "2022-05-05T17:15:09.147",
  "references": [
    {
      "source": "ics-cert@hq.dhs.gov",
      "tags": [
        "Permissions Required",
        "Vendor Advisory"
      ],
      "url": "https://support.rti.com/s/login/?ec=302\u0026startURL=%2Fs%2F"
    },
    {
      "source": "ics-cert@hq.dhs.gov",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Permissions Required",
        "Vendor Advisory"
      ],
      "url": "https://support.rti.com/s/login/?ec=302\u0026startURL=%2Fs%2F"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02"
    }
  ],
  "sourceIdentifier": "ics-cert@hq.dhs.gov",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "ics-cert@hq.dhs.gov",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-38427 (GCVE-0-2021-38427)

Vulnerability from cvelistv5 – Published: 2022-05-05 15:25 – Updated: 2025-04-16 16:23

Title

RTI Connext DDS Professional and Connext DDS Secure Stack-based Buffer Overflow

Summary

RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code.

Severity

6.6 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-16 15:52 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

icscert icscert root

References

2 references

URL	Tags
https://www.cisa.gov/uscert/ics/advisories/icsa-2…
https://support.rti.com/s/login/?ec=302&startURL=…

Impacted products

2 products

Vendor	Product	Version
RTI	Connext DDS Professional	Affected: 4.2x , ≤ 6.1.0 (custom)
RTI	Connext DDS Secure	Affected: 4.2x , ≤ 6.1.0 (custom)

Credits

Federico Maggi (Trend Micro Research), Ta-Lun Yen, and Chizuru Toyama (TXOne Networks, Trend Micro) reported these vulnerabilities to CISA. In addition, Patrick Kuo, Mars Cheng (TXOne Networks, Trend Micro), Víctor Mayoral-Vilches (Alias Robotics), and Erik Boasson (ADLINK Technology) also contributed to this research.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:44:22.264Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://support.rti.com/s/login/?ec=302\u0026startURL=%2Fs%2F"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-38427",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-16T15:52:42.432584Z",
                "version": "2.0.3"
              },
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        ],
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        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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        {
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          "vendor": "RTI",
          "versions": [
            {
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              "status": "affected",
              "version": "4.2x",
              "versionType": "custom"
            }
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        },
        {
          "product": "Connext DDS Secure",
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            "integrityImpact": "LOW",
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          "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02"
        },
        {
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      ],
      "solutions": [
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        }
      ],
      "source": {
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}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.