VDB-141722 · CVE-2019-16275 · USN-4136-1

hostapd/wpa_supplicant up to 2.9 Disconnection Source Address input validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in hostapd and wpa_supplicant up to 2.9. This impacts an unknown function of the component Disconnection Handler. Such manipulation as part of Source Address leads to input validation. This vulnerability is uniquely identified as CVE-2019-16275. The attack can only be initiated within the local network. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in hostapd and wpa_supplicant up to 2.9. It has been rated as problematic. Affected by this issue is an unknown function of the component Disconnection Handler. The manipulation as part of a Source Address leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

hostapd before 2.10 and wpa_supplicant before 2.10 allow an incorrect indication of disconnection in certain situations because source address validation is mishandled. This is a denial of service that should have been prevented by PMF (aka management frame protection). The attacker must send a crafted 802.11 frame from a location that is within the 802.11 communications range.

The weakness was disclosed 09/12/2019 (oss-sec). The advisory is available at openwall.com. This vulnerability is handled as CVE-2019-16275 since 09/12/2019. The exploitation is known to be easy. The attack needs to approached within the local network. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 2.10 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: hostapd/wpa_supplicant 2.10

Timelineinfo

09/12/2019 🔍
09/12/2019 +0 days 🔍
09/13/2019 +1 days 🔍
12/19/2023 +1558 days 🔍

Sourcesinfo

Advisory: USN-4136-1
Status: Not defined

CVE: CVE-2019-16275 (🔍)
GCVE (CVE): GCVE-0-2019-16275
GCVE (VulDB): GCVE-100-141722

Entryinfo

Created: 09/13/2019 08:26
Updated: 12/19/2023 15:12
Changes: 09/13/2019 08:26 (39), 08/22/2020 15:48 (17), 12/19/2023 15:12 (4)
Complete: 🔍
Cache ID: 216::103