ubuntu-cve-2021-27803
Vulnerability from osv_ubuntu
Published
2021-02-26 23:15
Modified
2025-12-23 04:55
Summary
Details

A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range.

Severity
7.5 (High)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 (High)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/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+esm4"
          },
          {
            "binary_name": "wpagui",
            "binary_version": "2.1-0ubuntu1.7+esm4"
          },
          {
            "binary_name": "wpasupplicant",
            "binary_version": "2.1-0ubuntu1.7+esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "wpa",
        "purl": "pkg:deb/ubuntu/wpa@2.1-0ubuntu1.7+esm4?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1-0ubuntu1.7+esm4"
            }
          ],
          "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",
        "2.1-0ubuntu1.7+esm1",
        "2.1-0ubuntu1.7+esm2",
        "2.1-0ubuntu1.7+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "hostapd",
            "binary_version": "1:2.4-0ubuntu6.8"
          },
          {
            "binary_name": "wpagui",
            "binary_version": "2.4-0ubuntu6.8"
          },
          {
            "binary_name": "wpasupplicant",
            "binary_version": "2.4-0ubuntu6.8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "wpa",
        "purl": "pkg:deb/ubuntu/wpa@2.4-0ubuntu6.8?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4-0ubuntu6.8"
            }
          ],
          "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",
        "2.4-0ubuntu6.5",
        "2.4-0ubuntu6.6",
        "2.4-0ubuntu6.7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "hostapd",
            "binary_version": "2:2.6-15ubuntu2.8"
          },
          {
            "binary_name": "wpagui",
            "binary_version": "2:2.6-15ubuntu2.8"
          },
          {
            "binary_name": "wpasupplicant",
            "binary_version": "2:2.6-15ubuntu2.8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "wpa",
        "purl": "pkg:deb/ubuntu/wpa@2:2.6-15ubuntu2.8?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.6-15ubuntu2.8"
            }
          ],
          "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",
        "2:2.6-15ubuntu2.3",
        "2:2.6-15ubuntu2.4",
        "2:2.6-15ubuntu2.5",
        "2:2.6-15ubuntu2.6",
        "2:2.6-15ubuntu2.7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "hostapd",
            "binary_version": "2:2.9-1ubuntu4.3"
          },
          {
            "binary_name": "wpagui",
            "binary_version": "2:2.9-1ubuntu4.3"
          },
          {
            "binary_name": "wpasupplicant",
            "binary_version": "2:2.9-1ubuntu4.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "wpa",
        "purl": "pkg:deb/ubuntu/wpa@2:2.9-1ubuntu4.3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.9-1ubuntu4.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:2.9-1ubuntu2",
        "2:2.9-1ubuntu3",
        "2:2.9-1ubuntu4",
        "2:2.9-1ubuntu4.1",
        "2:2.9-1ubuntu4.2"
      ]
    }
  ],
  "aliases": [],
  "details": "A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range.",
  "id": "UBUNTU-CVE-2021-27803",
  "modified": "2025-12-23T04:55:33Z",
  "published": "2021-02-26T23:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-27803"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2021/02/25/3"
    },
    {
      "type": "REPORT",
      "url": "https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2021/02/27/1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4757-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4757-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-27803"
    }
  ],
  "related": [
    "USN-4757-1",
    "USN-4757-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-27803"
  ]
}



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Sightings

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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.


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