USN-4757-2

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Source
https://ubuntu.com/security/notices/USN-4757-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4757-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4757-2
Upstream
Related
Published
2021-03-04T17:54:50.387880Z
Modified
2025-10-14T16:38:07Z
Summary
wpa vulnerability
Details

USN-4757-1 fixed a vulnerability in wpa_supplicant and hostapd. This update provides the corresponding update for Ubuntu 14.04 ESM.

Original advisory 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:Pro:14.04:LTS / wpa

Package

Name
wpa
Purl
pkg:deb/ubuntu/wpa@2.1-0ubuntu1.7+esm4?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.1-0ubuntu1.7+esm4

Affected versions

1.*

1.0-3ubuntu2
1.0-3ubuntu3
1.0-3ubuntu4

2.*

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": "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"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:14.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-27803",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}