The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit
CVE-2019-9497

8.1HIGH

Key Information:

Vendor

Wi-fi Alliance

Status
Hostapd With Eap-pwd Support
WPa Supplicant With Eap-pwd Support
Hostapd With Sae Support
WPa Supplicant With Sae Support
Vendor
CVE Published:
17 April 2019

What is CVE-2019-9497?

The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit. This vulnerability may allow an attacker to complete EAP-PWD authentication without knowing the password. However, unless the crypto library does not implement additional checks for the EC point, the attacker will not be able to derive the session key or complete the key exchange. 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.

Affected Version(s)

hostapd with EAP-pwd support 2.7

hostapd with SAE support 2.4

wpa_supplicant with EAP-pwd support 2.7

References

https://w1.fi/security/2019-4/
x_refsource_CONFIRM
https://www.synology.com/security/advisory/Synology_SA_19_16
x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA

EPSS Score

10% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.