Vulnerability-Lookup

ubuntu-cve-2026-3608

Vulnerability from osv_ubuntu

Published

2026-03-25 00:00

Modified

2026-06-30 16:18

Summary

Details

Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error. This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.

Severity

7.5 (High)


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

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-2026-3608	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-3608	REPORT
	https://ubuntu.com/security/notices/USN-8403-1	ADVISORY

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-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-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-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-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": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "kea",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-admin",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-ctrl-agent",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "python3-kea-connector",
            "binary_version": "2.4.1-3ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@2.4.1-3ubuntu0.2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.1-3ubuntu0.2"
            }
          ],
          "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": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "kea",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-admin",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-ctrl-agent",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "python3-kea-connector",
            "binary_version": "2.6.3-2ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@2.6.3-2ubuntu0.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.6.3-2ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6.1-1",
        "2.6.1-2",
        "2.6.3-1",
        "2.6.3-2"
      ]
    }
  ],
  "aliases": [],
  "details": "Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error. This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.",
  "id": "UBUNTU-CVE-2026-3608",
  "modified": "2026-06-30T16:18:34Z",
  "published": "2026-03-25T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-3608"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-3608"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8403-1"
    }
  ],
  "related": [
    "USN-8403-1"
  ],
  "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": "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-2026-3608"
  ]
}

CVE-2026-3608 (GCVE-0-2026-3608)

Vulnerability from cvelistv5 – Published: 2026-03-25 08:46 – Updated: 2026-07-15 01:02

Title

Stack overflow in Kea daemons

Summary

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 (v2.0.3)

CWE

CWE-617 - Reachable Assertion

Assigner

isc

References

9 references

URL	Tags
https://kb.isc.org/docs/cve-2026-3608	vendor-advisory
https://downloads.isc.org/isc/kea/2.6.5	patch
https://downloads.isc.org/isc/kea/3.0.3	patch
http://www.openwall.com/lists/oss-security/2026/03/25/6
https://access.redhat.com/security/cve/CVE-2026-3608	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451139	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:11344	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7342	vendor-advisoryx_refsource_REDHAT

Impacted products

3 products

Vendor	Product	Version
ISC	Kea	Affected: 2.6.0 , ≤ 2.6.4 (custom) Affected: 3.0.0 , ≤ 3.0.2 (custom)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:3.0.1-3.el10_1 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.1
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	Unaffected: 0:2.6.3-2.el10_0.3 , < * (rpm) cpe:/o:redhat:enterprise_linux_eus:10.0

Date Public

2026-03-25 00:00

Credits

ISC would like to thank Ali Norouzi of Keysight for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-3608",
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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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-617",
              "description": "CWE-617 Reachable Assertion",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-25T08:46:48.992Z",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "shortName": "isc"
      },
      "references": [
        {
          "name": "CVE-2026-3608",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://kb.isc.org/docs/cve-2026-3608"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://downloads.isc.org/isc/kea/2.6.5"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://downloads.isc.org/isc/kea/3.0.3"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to the patched release most closely related to your current version of Kea: 2.6.5 or 3.0.3."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Stack overflow in Kea daemons",
      "workarounds": [
        {
          "lang": "en",
          "value": "Securing the API sockets with TLS, and requiring the client to authenticate with a certificate (mutual authentication), prevents the attacker from establishing an API connection to Kea.  Set cert-required to true (the default) to require a client certificate.  See: https://kea.readthedocs.io/en/stable/arm/security.html#tls-https-configuration"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2026-3608",
    "datePublished": "2026-03-25T08:46:48.992Z",
    "dateReserved": "2026-03-05T17:47:36.088Z",
    "dateUpdated": "2026-07-15T01:02:33.862Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

usn-8403-1

Vulnerability from osv_ubuntu

Published

2026-06-08 14:28

Modified

2026-06-30 15:55

Summary

isc-kea vulnerability

Details

Ali Norouzi discovered that Kea DHCP did not properly handle maliciously crafted messages over configured API sockets and HA listeners. A remote attacker could possibly use this issue to cause Kea DHCP to crash, resulting in a denial of service.

References

URL

Type

	https://ubuntu.com/security/notices/USN-8403-1	ADVISORY
	https://ubuntu.com/security/CVE-2026-3608	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-3608",
              "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": "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "kea",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-admin",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-ctrl-agent",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "2.4.1-3ubuntu0.2"
          },
          {
            "binary_name": "python3-kea-connector",
            "binary_version": "2.4.1-3ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@2.4.1-3ubuntu0.2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.1-3ubuntu0.2"
            }
          ],
          "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"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-3608",
              "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": "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "kea",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-admin",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-common",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-ctrl-agent",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp-ddns-server",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp4-server",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "kea-dhcp6-server",
            "binary_version": "2.6.3-2ubuntu0.1"
          },
          {
            "binary_name": "python3-kea-connector",
            "binary_version": "2.6.3-2ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "isc-kea",
        "purl": "pkg:deb/ubuntu/isc-kea@2.6.3-2ubuntu0.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.6.3-2ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6.1-1",
        "2.6.1-2",
        "2.6.3-1",
        "2.6.3-2"
      ]
    }
  ],
  "aliases": [],
  "details": "Ali Norouzi discovered that Kea DHCP did not properly handle maliciously\ncrafted messages over configured API sockets and HA listeners. A remote\nattacker could possibly use this issue to cause Kea DHCP to crash,\nresulting in a denial of service.",
  "id": "USN-8403-1",
  "modified": "2026-06-30T15:55:21Z",
  "published": "2026-06-08T14:28:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8403-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-3608"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "isc-kea vulnerability",
  "upstream": [
    "UBUNTU-CVE-2026-3608"
  ]
}

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.

Action not permitted

ubuntu-cve-2026-3608

Vulnerability from osv_ubuntu

CVE-2026-3608 (GCVE-0-2026-3608)

usn-8403-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature