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CVE-2003-0364

Status: ModifiedMedium (5)—
Severity5Medium · CVSS 2.0
Exploitation probability5.96 %higher than 93% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

The TCP/IP fragment reassembly handling in the Linux kernel 2.4 allows remote attackers to cause a denial of service (CPU consumption) via certain packets that cause a large number of hash table collisions.

CVSS

Base score
5
Version
2.0
Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
5.96 %
Percentile among all scored CVEs
93
Score date
10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Redhat — Linux

CWEs

References

Show 20 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2003-0364",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2003-06-16T04:00:00.000",
  "references": [
    {
      "url": "http://www.debian.org/security/2003/dsa-311",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2003/dsa-312",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2003/dsa-332",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2003/dsa-336",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2004/dsa-442",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-187.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-195.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-198.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.turbolinux.com/security/TLSA-2003-41.txt",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A295",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2003/dsa-311",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2003/dsa-312",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2003/dsa-332",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.debian.org/security/2003/dsa-336",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2004/dsa-442",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-187.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-195.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-198.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.turbolinux.com/security/TLSA-2003-41.txt",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A295",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The TCP/IP fragment reassembly handling in the Linux kernel 2.4 allows remote attackers to cause a denial of service (CPU consumption) via certain packets that cause a large number of hash table collisions."
    },
    {
      "lang": "es",
      "value": "El manejo de reensamblaje de fragmentos TCP/IP en el Linux kernel 2.4 permite que atacantes remotos provoquen una denegación de servicio (agotamiento de CPU) mediante ciertos paquetes que causan un elevado número de colisiones en la tabla hash."
    }
  ],
  "lastModified": "2026-06-16T22:02:04.447",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:redhat:linux:7.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1D46E093-1C68-43BB-B281-12117EC8DE0F"
            },
            {
              "criteria": "cpe:2.3:o:redhat:linux:7.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E562907F-D915-4030-847A-3C6834A80D4E"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "138985E6-5107-4E8B-A801-C3D5FE075227"
            },
            {
              "criteria": "cpe:2.3:o:redhat:linux:8.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "038FEDE7-986F-4CA5-9003-BA68352B87D4"
            },
            {
              "criteria": "cpe:2.3:o:redhat:linux:9.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E66F7BF0-EF7C-4695-9D67-7C1A01C6F9B9"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}