ubuntu-cve-2019-11555
Vulnerability from osv_ubuntu
Published
2019-04-26 00:00
Modified
2025-10-14 16:48
Summary
Details

The EAP-pwd implementation in hostapd (EAP server) before 2.8 and wpa_supplicant (EAP peer) before 2.8 does not validate fragmentation reassembly state properly for a case where an unexpected fragment could be received. This could result in process termination due to a NULL pointer dereference (denial of service). This affects eap_server/eap_server_pwd.c and eap_peer/eap_pwd.c.

Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "hostapd",
            "binary_version": "1:2.1-0ubuntu1.7+esm1"
          },
          {
            "binary_name": "wpagui",
            "binary_version": "2.1-0ubuntu1.7+esm1"
          },
          {
            "binary_name": "wpasupplicant",
            "binary_version": "2.1-0ubuntu1.7+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "wpa",
        "purl": "pkg:deb/ubuntu/wpa@2.1-0ubuntu1.7+esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1-0ubuntu1.7+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0-3ubuntu2",
        "1.0-3ubuntu3",
        "1.0-3ubuntu4",
        "2.1-0ubuntu1",
        "2.1-0ubuntu1.1",
        "2.1-0ubuntu1.2",
        "2.1-0ubuntu1.3",
        "2.1-0ubuntu1.4",
        "2.1-0ubuntu1.5",
        "2.1-0ubuntu1.6",
        "2.1-0ubuntu1.7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "hostapd",
            "binary_version": "1:2.4-0ubuntu6.5"
          },
          {
            "binary_name": "wpagui",
            "binary_version": "2.4-0ubuntu6.5"
          },
          {
            "binary_name": "wpasupplicant",
            "binary_version": "2.4-0ubuntu6.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "wpa",
        "purl": "pkg:deb/ubuntu/wpa@2.4-0ubuntu6.5?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4-0ubuntu6.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4-0ubuntu3",
        "2.4-0ubuntu4",
        "2.4-0ubuntu5",
        "2.4-0ubuntu6",
        "2.4-0ubuntu6.2",
        "2.4-0ubuntu6.3",
        "2.4-0ubuntu6.4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "hostapd",
            "binary_version": "2:2.6-15ubuntu2.3"
          },
          {
            "binary_name": "wpagui",
            "binary_version": "2:2.6-15ubuntu2.3"
          },
          {
            "binary_name": "wpasupplicant",
            "binary_version": "2:2.6-15ubuntu2.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "wpa",
        "purl": "pkg:deb/ubuntu/wpa@2:2.6-15ubuntu2.3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.6-15ubuntu2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4-0ubuntu10",
        "2:2.4-1.1ubuntu1",
        "2:2.6-15ubuntu1",
        "2:2.6-15ubuntu2",
        "2:2.6-15ubuntu2.1",
        "2:2.6-15ubuntu2.2"
      ]
    }
  ],
  "aliases": [],
  "details": "The EAP-pwd implementation in hostapd (EAP server) before 2.8 and wpa_supplicant (EAP peer) before 2.8 does not validate fragmentation reassembly state properly for a case where an unexpected fragment could be received. This could result in process termination due to a NULL pointer dereference (denial of service). This affects eap_server/eap_server_pwd.c and eap_peer/eap_pwd.c.",
  "id": "UBUNTU-CVE-2019-11555",
  "modified": "2025-10-14T16:48:37Z",
  "published": "2019-04-26T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-11555"
    },
    {
      "type": "REPORT",
      "url": "https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2019/04/26/1"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2019/04/18/6"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3969-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3969-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-11555"
    }
  ],
  "related": [
    "USN-3969-1",
    "USN-3969-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-11555"
  ]
}



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