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10 vulnerabilities found for by libcoap

CVE-2025-65496 (GCVE-0-2025-65496)
Vulnerability from cvelistv5
Published
2025-11-24 00:00
Modified
2025-11-24 18:26
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE
  • n/a
Summary
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
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      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 4.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
              "version": "3.1"
            }
          },
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                "id": "CVE-2025-65496",
                "options": [
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                "timestamp": "2025-11-24T18:26:37.878929Z",
                "version": "2.0.3"
              },
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            }
          }
        ],
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          {
            "descriptions": [
              {
                "cweId": "CWE-476",
                "description": "CWE-476 NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-24T18:26:49.240Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
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          "vendor": "n/a",
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
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      },
      "references": [
        {
          "url": "https://github.com/obgm/libcoap/issues/1745"
        },
        {
          "url": "https://github.com/obgm/libcoap/pull/1750"
        }
      ]
    }
  },
  "cveMetadata": {
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    "dateReserved": "2025-11-18T00:00:00.000Z",
    "dateUpdated": "2025-11-24T18:26:49.240Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2025-65498 (GCVE-0-2025-65498)
Vulnerability from cvelistv5
Published
2025-11-24 00:00
Modified
2025-11-24 18:26
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE
  • n/a
Summary
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
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      {
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          {
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "baseScore": 4.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
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              "userInteraction": "REQUIRED",
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            }
          },
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                "timestamp": "2025-11-24T18:25:52.920041Z",
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        ],
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        },
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      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
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          "url": "https://github.com/obgm/libcoap/issues/1746"
        },
        {
          "url": "https://github.com/obgm/libcoap/pull/1750"
        }
      ]
    }
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}

CVE-2025-65493 (GCVE-0-2025-65493)
Vulnerability from cvelistv5
Published
2025-11-24 00:00
Modified
2025-11-24 14:53
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
NULL pointer dereference in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS/TLS connection that triggers BIO_get_data() to return NULL.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
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      {
        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
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                "options": [
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                  },
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-24T14:52:15.897750Z",
                "version": "2.0.3"
              },
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            }
          }
        ],
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            "descriptions": [
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                "description": "CWE-476 NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-24T14:53:58.026Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "NULL pointer dereference in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS/TLS connection that triggers BIO_get_data() to return NULL."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
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      ],
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        "dateUpdated": "2025-11-24T13:58:50.655Z",
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      },
      "references": [
        {
          "url": "https://github.com/obgm/libcoap/issues/1743"
        },
        {
          "url": "https://github.com/obgm/libcoap/pull/1750"
        }
      ]
    }
  },
  "cveMetadata": {
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    "datePublished": "2025-11-24T00:00:00.000Z",
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}

CVE-2025-65497 (GCVE-0-2025-65497)
Vulnerability from cvelistv5
Published
2025-11-24 00:00
Modified
2025-11-24 18:26
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE
  • n/a
Summary
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
  "containers": {
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      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 4.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
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                "timestamp": "2025-11-24T18:26:11.941864Z",
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        ],
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        },
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      }
    ],
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      ],
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        }
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}

CVE-2025-65499 (GCVE-0-2025-65499)
Vulnerability from cvelistv5
Published
2025-11-24 00:00
Modified
2025-11-24 18:27
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE
  • n/a
Summary
Array index error in tls_verify_call_back() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_ex_data_X509_STORE_CTX_idx() to return -1.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
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      {
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          {
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              "baseScore": 4.3,
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              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
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              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
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                "timestamp": "2025-11-24T18:27:04.923531Z",
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                "cweId": "CWE-129",
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          "dateUpdated": "2025-11-24T18:27:33.150Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        }
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  "dataType": "CVE_RECORD",
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}

CVE-2025-65494 (GCVE-0-2025-65494)
Vulnerability from cvelistv5
Published
2025-11-24 00:00
Modified
2025-11-24 14:49
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
NULL pointer dereference in get_san_or_cn_from_cert() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted X.509 certificate that causes sk_GENERAL_NAME_value() to return NULL.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
  "containers": {
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      {
        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
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            "other": {
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                "timestamp": "2025-11-24T14:46:32.203997Z",
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          "dateUpdated": "2025-11-24T14:49:31.807Z",
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
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      ],
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          "lang": "en",
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        }
      ],
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        {
          "url": "https://github.com/obgm/libcoap/pull/1750"
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  },
  "cveMetadata": {
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    "datePublished": "2025-11-24T00:00:00.000Z",
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    "dateUpdated": "2025-11-24T14:49:31.807Z",
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}

CVE-2025-65495 (GCVE-0-2025-65495)
Vulnerability from cvelistv5
Published
2025-11-24 00:00
Modified
2025-11-24 14:41
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
Integer signedness error in tls_verify_call_back() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted TLS certificate that causes i2d_X509() to return -1 and be misused as a malloc() size parameter.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
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                "id": "CVE-2025-65495",
                "options": [
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                "timestamp": "2025-11-24T14:39:26.552727Z",
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        ],
        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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      }
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          "lang": "en",
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        }
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  "cveMetadata": {
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}

CVE-2025-65501 (GCVE-0-2025-65501)
Vulnerability from cvelistv5
Published
2025-11-24 00:00
Modified
2025-11-24 18:28
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE
  • n/a
Summary
Null pointer dereference in coap_dtls_info_callback() in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSL_get_app_data() returns NULL.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
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}

CVE-2025-65500 (GCVE-0-2025-65500)
Vulnerability from cvelistv5
Published
2025-11-24 00:00
Modified
2025-11-24 18:28
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE
  • n/a
Summary
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "confidentialityImpact": "NONE",
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              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
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        }
      ],
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CVE-2024-31031 (GCVE-0-2024-31031)
Vulnerability from cvelistv5
Published
2024-04-17 00:00
Modified
2025-11-04 22:06
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
An issue in `coap_pdu.c` in libcoap 4.3.4 allows attackers to cause undefined behavior via a sequence of messages leading to unsigned integer overflow.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
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      {
        "affected": [
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            "product": "libcoap",
            "vendor": "libcoap",
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            ]
          }
        ],
        "providerMetadata": {
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