Vulnerability-Lookup

ubuntu-cve-2025-11232 Withdrawn 2025-11-28

Vulnerability from osv_ubuntu

Published

2025-10-29 18:15

Modified

2025-11-06 05:22

Summary

Details

To trigger the issue, three configuration parameters must have specific settings: "hostname-char-set" must be left at the default setting, which is "[^A-Za-z0-9.-]"; "hostname-char-replacement" must be empty (the default); and "ddns-qualifying-suffix" must NOT be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly. This issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2.

Severity

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2025-11232	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-11232	REPORT
	https://kb.isc.org/docs/cve-2025-11232	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kea-admin",
            "binary_version": "1.0.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "1.0.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-dev",
            "binary_version": "1.0.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "1.0.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "1.0.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "1.0.0-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@1.0.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0-1",
        "1.0.0-1build1",
        "1.0.0-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kea-admin",
            "binary_version": "1.1.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "1.1.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-dev",
            "binary_version": "1.1.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "1.1.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "1.1.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "1.1.0-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@1.1.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.0-1",
        "1.1.0-1build1",
        "1.1.0-1build2",
        "1.1.0-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kea-admin",
            "binary_version": "1.6.2-0ubuntu1"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "1.6.2-0ubuntu1"
          },
          {
            "binary_name": "kea-ctrl-agent",
            "binary_version": "1.6.2-0ubuntu1"
          },
          {
            "binary_name": "kea-dev",
            "binary_version": "1.6.2-0ubuntu1"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "1.6.2-0ubuntu1"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "1.6.2-0ubuntu1"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "1.6.2-0ubuntu1"
          },
          {
            "binary_name": "python3-kea-connector",
            "binary_version": "1.6.2-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@1.6.2-0ubuntu1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.5.0-2ubuntu1",
        "1.5.0-2ubuntu2",
        "1.5.0-2ubuntu3",
        "1.6.1-0ubuntu1",
        "1.6.1-0ubuntu2",
        "1.6.2-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kea",
            "binary_version": "2.0.2-1ubuntu0.1"
          },
          {
            "binary_name": "kea-admin",
            "binary_version": "2.0.2-1ubuntu0.1"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "2.0.2-1ubuntu0.1"
          },
          {
            "binary_name": "kea-ctrl-agent",
            "binary_version": "2.0.2-1ubuntu0.1"
          },
          {
            "binary_name": "kea-dev",
            "binary_version": "2.0.2-1ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "2.0.2-1ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "2.0.2-1ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "2.0.2-1ubuntu0.1"
          },
          {
            "binary_name": "python3-kea-connector",
            "binary_version": "2.0.2-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@2.0.2-1ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.8.0-0ubuntu1",
        "2.0.1-2",
        "2.0.2-1",
        "2.0.2-1ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kea",
            "binary_version": "2.4.1-3ubuntu0.1"
          },
          {
            "binary_name": "kea-admin",
            "binary_version": "2.4.1-3ubuntu0.1"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "2.4.1-3ubuntu0.1"
          },
          {
            "binary_name": "kea-ctrl-agent",
            "binary_version": "2.4.1-3ubuntu0.1"
          },
          {
            "binary_name": "kea-dev",
            "binary_version": "2.4.1-3ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "2.4.1-3ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "2.4.1-3ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "2.4.1-3ubuntu0.1"
          },
          {
            "binary_name": "python3-kea-connector",
            "binary_version": "2.4.1-3ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@2.4.1-3ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.1-3",
        "2.4.0-1",
        "2.4.1-1",
        "2.4.1-2build1",
        "2.4.1-3build1",
        "2.4.1-3build3",
        "2.4.1-3build3.1",
        "2.4.1-3ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kea",
            "binary_version": "2.6.3-2"
          },
          {
            "binary_name": "kea-admin",
            "binary_version": "2.6.3-2"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "2.6.3-2"
          },
          {
            "binary_name": "kea-ctrl-agent",
            "binary_version": "2.6.3-2"
          },
          {
            "binary_name": "kea-dev",
            "binary_version": "2.6.3-2"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "2.6.3-2"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "2.6.3-2"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "2.6.3-2"
          },
          {
            "binary_name": "python3-kea-connector",
            "binary_version": "2.6.3-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@2.6.3-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6.1-1",
        "2.6.1-2",
        "2.6.3-1",
        "2.6.3-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kea",
            "binary_version": "2.6.1-1ubuntu0.1"
          },
          {
            "binary_name": "kea-admin",
            "binary_version": "2.6.1-1ubuntu0.1"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "2.6.1-1ubuntu0.1"
          },
          {
            "binary_name": "kea-ctrl-agent",
            "binary_version": "2.6.1-1ubuntu0.1"
          },
          {
            "binary_name": "kea-dev",
            "binary_version": "2.6.1-1ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "2.6.1-1ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "2.6.1-1ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "2.6.1-1ubuntu0.1"
          },
          {
            "binary_name": "python3-kea-connector",
            "binary_version": "2.6.1-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.04",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@2.6.1-1ubuntu0.1?arch=source\u0026distro=plucky"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.1-3build4",
        "2.6.1-1",
        "2.6.1-1ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "To trigger the issue, three configuration parameters must have specific settings: \"hostname-char-set\" must be left at the default setting, which is \"[^A-Za-z0-9.-]\"; \"hostname-char-replacement\" must be empty (the default); and \"ddns-qualifying-suffix\" must *NOT* be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly. This issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2.",
  "id": "UBUNTU-CVE-2025-11232",
  "modified": "2025-11-06T05:22:36Z",
  "published": "2025-10-29T18:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-11232"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-11232"
    },
    {
      "type": "REPORT",
      "url": "https://kb.isc.org/docs/cve-2025-11232"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-11232"
  ],
  "withdrawn": "2025-11-28T05:13:40Z"
}

CVE-2025-11232 (GCVE-0-2025-11232)

Vulnerability from cvelistv5 – Published: 2025-10-29 18:02 – Updated: 2025-11-04 21:09

Title

Invalid characters cause assert

Summary

To trigger the issue, three configuration parameters must have specific settings: "hostname-char-set" must be left at the default setting, which is "[^A-Za-z0-9.-]"; "hostname-char-replacement" must be empty (the default); and "ddns-qualifying-suffix" must *NOT* be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly. This issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-29 18:22 UTC

CWE

CWE-823 - Use of Out-of-range Pointer Offset

Assigner

isc mitre root

References

2 references

URL	Tags
https://kb.isc.org/docs/cve-2025-11232	vendor-advisory
http://www.openwall.com/lists/oss-security/2025/10/29/5

Impacted products

1 product

Vendor	Product	Version
ISC	Kea	Affected: 3.0.1 , ≤ 3.0.1 (custom) Affected: 3.1.1 , ≤ 3.1.2 (custom) Unaffected: 2.6.0 , ≤ 2.6.4 (custom) Unaffected: 2.7.0 , ≤ 2.7.9 (custom) Unaffected: 3.0.0 , ≤ 3.0.0 (custom) Unaffected: 3.1.0 , ≤ 3.1.0 (custom)

Date Public

2025-10-29 00:00

Credits

ISC would like to thank Siniša Uskoković and Ralf Steuer from Vienna University of Economics and Business for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-11232",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-29T18:22:07.119804Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-29T18:22:23.455Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T21:09:09.184Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/10/29/5"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Kea",
          "vendor": "ISC",
          "versions": [
            {
              "lessThanOrEqual": "3.0.1",
              "status": "affected",
              "version": "3.0.1",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "3.1.2",
              "status": "affected",
              "version": "3.1.1",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2.6.4",
              "status": "unaffected",
              "version": "2.6.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2.7.9",
              "status": "unaffected",
              "version": "2.7.0",
              "versionType": "custom"
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            {
              "lessThanOrEqual": "3.0.0",
              "status": "unaffected",
              "version": "3.0.0",
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            },
            {
              "lessThanOrEqual": "3.1.0",
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              "version": "3.1.0",
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            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "ISC would like to thank Sini\u0161a Uskokovi\u0107 and Ralf Steuer from Vienna University of Economics and Business for bringing this vulnerability to our attention."
        }
      ],
      "datePublic": "2025-10-29T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "To trigger the issue, three configuration parameters must have specific settings: \"hostname-char-set\" must be left at the default setting, which is \"[^A-Za-z0-9.-]\"; \"hostname-char-replacement\" must be empty (the default); and \"ddns-qualifying-suffix\" must *NOT* be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly.\nThis issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "We are not aware of any active exploits."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "A denial of service from the repeated attacks against the Kea server"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-823",
              "description": "CWE-823 Use of Out-of-range Pointer Offset",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-29T18:02:39.421Z",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "shortName": "isc"
      },
      "references": [
        {
          "name": "CVE-2025-11232",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://kb.isc.org/docs/cve-2025-11232"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to the patched release most closely related to your current version of Kea: 3.0.2 or 3.1.3."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Invalid characters cause assert",
      "workarounds": [
        {
          "lang": "en",
          "value": "Setting \"hostname-char-replacement\" to anything other than an empty value (suggestion: \"x\") is an effective workaround to this issue, regardless of other settings."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2025-11232",
    "datePublished": "2025-10-29T18:02:39.421Z",
    "dateReserved": "2025-10-01T15:15:46.992Z",
    "dateUpdated": "2025-11-04T21:09:09.184Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.