CVE-2021-27803
Publication date 26 February 2021
Last updated 25 August 2025
Ubuntu priority
Description
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| wpa | ||
| 20.04 LTS focal |
Fixed 2:2.9-1ubuntu4.3
|
|
| 18.04 LTS bionic |
Fixed 2:2.6-15ubuntu2.8
|
|
| 16.04 LTS xenial |
Fixed 2.4-0ubuntu6.8
|
|
| 14.04 LTS trusty |
Fixed 2.1-0ubuntu1.7+esm4
|
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| Package | Patch details |
|---|---|
| wpa |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Adjacent |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-4757-1
- wpa_supplicant and hostapd vulnerability
- 3 March 2021
- USN-4757-2
- wpa_supplicant and hostapd vulnerability
- 4 March 2021