VDB-133477 · CVE-2019-9499 · SA_19_16

hostapd/wpa_supplicant EAP-PWD access control

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.
7.7	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in hostapd and wpa_supplicant. This vulnerability affects unknown code of the component EAP-PWD. This manipulation causes access control. This vulnerability is tracked as CVE-2019-9499. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in hostapd and wpa_supplicant (affected version unknown). It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component EAP-PWD. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The implementations of EAP-PWD in wpa_supplicant EAP Peer, when built against a crypto library missing explicit validation on imported elements, do not validate the scalar and element values in EAP-pwd-Commit. An attacker may complete authentication, session key and control of the data connection with a client. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.

The bug was discovered 04/10/2019. The weakness was disclosed 04/17/2019 by Joshua (Website). The advisory is shared at w1.fi. This vulnerability is known as CVE-2019-9499 since 03/01/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197427 (Ubuntu Security Notification for wpa_supplicant and hostapd vulnerabilities (USN-3944-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 71796†). The entries VDB-73689, VDB-132130, VDB-133473 and VDB-133472 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.7

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/29/2014 🔍
03/01/2019 +1523 days 🔍
04/10/2019 +40 days 🔍
04/17/2019 +7 days 🔍
04/17/2019 +0 days 🔍
08/29/2023 +1595 days 🔍

Sourcesinfo

Advisory: SA_19_16
Researcher: Joshua
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-9499 (🔍)
GCVE (CVE): GCVE-0-2019-9499
GCVE (VulDB): GCVE-100-133477
SecurityFocus: 71796 - libsndfile 'src/sd2.c' Multiple Buffer Overflow Vulnerabilities

See also: 🔍

Entryinfo

Created: 04/17/2019 23:27
Updated: 08/29/2023 17:16
Changes: 04/17/2019 23:27 (59), 05/30/2020 12:04 (4), 08/29/2023 17:16 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.