ubuntu-cve-2025-32743
Vulnerability from osv_ubuntu
Published
2025-04-10 14:15
Modified
2026-05-20 15:17
Summary
Details

In ConnMan through 1.44, the lookup string in ns_resolv in dnsproxy.c can be NULL or an empty string when the TC (Truncated) bit is set in a DNS response. This allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code, because those lookup values lead to incorrect length calculations and incorrect memcpy operations.

Severity
9.0 (Critical)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "connman",
            "binary_version": "1.21-1.2+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "connman-vpn",
            "binary_version": "1.21-1.2+deb8u1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "connman",
        "purl": "pkg:deb/ubuntu/connman@1.21-1.2+deb8u1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.21-1.2",
        "1.21-1.2build1",
        "1.21-1.2build2",
        "1.21-1.2+deb8u1build0.16.04.1",
        "1.21-1.2+deb8u1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "connman",
            "binary_version": "1.35-6ubuntu0.1~esm1"
          },
          {
            "binary_name": "connman-vpn",
            "binary_version": "1.35-6ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "connman",
        "purl": "pkg:deb/ubuntu/connman@1.35-6ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.35-1",
        "1.35-2",
        "1.35-6",
        "1.35-6ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "connman",
            "binary_version": "1.36-2ubuntu0.1"
          },
          {
            "binary_name": "connman-vpn",
            "binary_version": "1.36-2ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "connman",
        "purl": "pkg:deb/ubuntu/connman@1.36-2ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.36-2build1",
        "1.36-2ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "connman",
            "binary_version": "1.36-2.3ubuntu0.1"
          },
          {
            "binary_name": "connman-vpn",
            "binary_version": "1.36-2.3ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "connman",
        "purl": "pkg:deb/ubuntu/connman@1.36-2.3ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.36-2.2build1",
        "1.36-2.3",
        "1.36-2.3build1",
        "1.36-2.3ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "connman",
            "binary_version": "1.42-5build3"
          },
          {
            "binary_name": "connman-tests",
            "binary_version": "1.42-5build3"
          },
          {
            "binary_name": "connman-vpn",
            "binary_version": "1.42-5build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "connman",
        "purl": "pkg:deb/ubuntu/connman@1.42-5build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.41-3",
        "1.42-1",
        "1.42-3",
        "1.42-5",
        "1.42-5build2",
        "1.42-5build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "connman",
            "binary_version": "1.44-3"
          },
          {
            "binary_name": "connman-tests",
            "binary_version": "1.44-3"
          },
          {
            "binary_name": "connman-vpn",
            "binary_version": "1.44-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "connman",
        "purl": "pkg:deb/ubuntu/connman@1.44-3?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.43-1",
        "1.44-1",
        "1.44-2",
        "1.44-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "connman",
            "binary_version": "1.45-3"
          },
          {
            "binary_name": "connman-tests",
            "binary_version": "1.45-3"
          },
          {
            "binary_name": "connman-vpn",
            "binary_version": "1.45-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "connman",
        "purl": "pkg:deb/ubuntu/connman@1.45-3?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.44-3",
        "1.45-2",
        "1.45-3"
      ]
    }
  ],
  "aliases": [],
  "details": "In ConnMan through 1.44, the lookup string in ns_resolv in dnsproxy.c can be NULL or an empty string when the TC (Truncated) bit is set in a DNS response. This allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code, because those lookup values lead to incorrect length calculations and incorrect memcpy operations.",
  "id": "UBUNTU-CVE-2025-32743",
  "modified": "2026-05-20T15:17:33Z",
  "published": "2025-04-10T14:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-32743"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-32743"
    },
    {
      "type": "REPORT",
      "url": "https://lapis-sawfish-be3.notion.site/0-click-Vulnerability-in-Comman-1-43_v3-1cadc00d01d080b0b3b9c46a6da584cc"
    },
    {
      "type": "REPORT",
      "url": "https://web.git.kernel.org/pub/scm/network/connman/connman.git/tree/src/dnsproxy.c?h=1.44#n1688"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-32743"
  ]
}



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