USN-4757-1

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-4757-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4757-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4757-1
Upstream
Related
Published
2021-03-03T11:45:25.976439Z
Modified
2025-10-13T04:35:23Z
Summary
wpa vulnerability
Details

It was discovered that wpa_supplicant did not properly handle P2P (Wi-Fi Direct) provision discovery requests in some situations. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

References

Affected packages

Ubuntu:16.04:LTS / wpa

Package

Name
wpa
Purl
pkg:deb/ubuntu/wpa@2.4-0ubuntu6.8?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4-0ubuntu6.8

Affected versions

2.*

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 

{
    "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"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-27803",
            "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": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

Ubuntu:18.04:LTS / wpa

Package

Name
wpa
Purl
pkg:deb/ubuntu/wpa@2:2.6-15ubuntu2.8?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:2.6-15ubuntu2.8

Affected versions

2.*

2.4-0ubuntu10

2:2.*

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 

{
    "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"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-27803",
            "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": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

Ubuntu:20.04:LTS / wpa

Package

Name
wpa
Purl
pkg:deb/ubuntu/wpa@2:2.9-1ubuntu4.3?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:2.9-1ubuntu4.3

Affected versions

2:2.*

2:2.9-1ubuntu2
2:2.9-1ubuntu3
2:2.9-1ubuntu4
2:2.9-1ubuntu4.1
2:2.9-1ubuntu4.2

Ecosystem specific 

{
    "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"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-27803",
            "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": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}