wpa_supplicant up to 2.9 P2P Provision Discovery Request p2p/p2p_pd.c denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in wpa_supplicant up to 2.9 and classified as problematic. This affects an unknown part of the file p2p/p2p_pd.c of the component P2P Provision Discovery Request Handler. Executing a manipulation can lead to denial of service. The identification of this vulnerability is CVE-2021-27803. The attack can only be executed locally. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in wpa_supplicant up to 2.9. This vulnerability affects an unknown code of the file p2p/p2p_pd.c of the component P2P Provision Discovery Request Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The weakness was shared 02/27/2021. The advisory is shared for download at w1.fi. This vulnerability was named CVE-2021-27803. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 240037 (TencentOS Server 3: wpa_supplicant (TSSA-2022:0223)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.10 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at w1.fi. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (240037). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 240037
Nessus Name: TencentOS Server 3: wpa_supplicant (TSSA-2022:0223)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: wpa_supplicant 2.10
Patch: w1.fi

Timelineinfo

02/26/2021 🔍
02/27/2021 +1 days 🔍
02/27/2021 +0 days 🔍
12/18/2025 +1755 days 🔍

Sourcesinfo

Advisory: w1.fi
Status: Confirmed

CVE: CVE-2021-27803 (🔍)
GCVE (CVE): GCVE-0-2021-27803
GCVE (VulDB): GCVE-100-170524

Entryinfo

Created: 02/27/2021 08:23
Updated: 12/18/2025 16:32
Changes: 02/27/2021 08:23 (39), 03/05/2021 21:50 (5), 03/14/2021 07:45 (18), 06/17/2025 15:08 (17), 12/18/2025 16:32 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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