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CVE-2019-9498— The implementations of EAP-PWD in hostapd EAP Server do not validate the scalar and element values in EAP-pwd-Commit

Quick assessment

Affected
Wi-Fi Alliance hostapd with EAP-pwd support
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WPA是美国Wi-Fi联盟（Wi-Fi Alliance）的一套Wi-Fi访问保护方案，包括安全协议和安全认证程序。 WPA的实现中存在授权问题漏洞。攻击者可利用该漏洞进行身份验证，获取网络的访问权限。

AI Predicted 9.1 Difficulty: Hard EPSS 2.21% · P82
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I. Basic Information for CVE-2019-9498

Vulnerability Information
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Vulnerability Title
The implementations of EAP-PWD in hostapd EAP Server do not validate the scalar and element values in EAP-pwd-Commit
Source: CVE Program / CVE List V5
Vulnerability Description
The implementations of EAP-PWD in hostapd EAP Server, 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 be able to use invalid scalar/element values to complete authentication, gaining session key and network access without needing or learning the password. 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5
Vulnerability Title
WPA 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WPA是美国Wi-Fi联盟（Wi-Fi Alliance）的一套Wi-Fi访问保护方案，包括安全协议和安全认证程序。 WPA的实现中存在授权问题漏洞。攻击者可利用该漏洞进行身份验证，获取网络的访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Wi-Fi Alliance hostapd with EAP-pwd support 2.7 ~ 2.7 -
Wi-Fi Alliance wpa_supplicant with EAP-pwd support 2.7 ~ 2.7 -
Wi-Fi Alliance hostapd with SAE support 2.4 ~ 2.4 -
Wi-Fi Alliance wpa_supplicant with SAE support 2.4 ~ 2.4 -

II. Public POCs for CVE-2019-9498

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III. Intelligence Information for CVE-2019-9498

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Mailing List Discussions for CVE-2019-9498 (4)

Other References for CVE-2019-9498 (3)

Same Patch Batch · Wi-Fi Alliance · 2019-04-17 · 6 CVEs total

CVE-2019-9494 The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side-channel at
CVE-2019-9495 The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channe
CVE-2019-9496 An invalid authentication sequence could result in the hostapd process terminating due to
CVE-2019-9497 The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not va
CVE-2019-9499 The implementations of EAP-PWD in wpa_supplicant EAP Peer do not validate the scalar and e

IV. Related Vulnerabilities

Same product: hostapd with EAP-pwd support
Same vendor: Wi-Fi Alliance
Same weakness: CWE-346

V. Comments for CVE-2019-9498

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