CWE-301
Reflection Attack in an Authentication Protocol
Simple authentication protocols are subject to reflection attacks if a malicious user can use the target machine to impersonate a trusted user.
CVE-2019-9497 (GCVE-0-2019-9497)
Vulnerability from cvelistv5
Published
2019-04-17 13:31
Modified
2024-08-04 21:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
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.
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ► | Wi-Fi Alliance | hostapd with EAP-pwd support |
Version: 2.7 < |
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|
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Mitigation
Phase: Architecture and Design
Description:
- Use different keys for the initiator and responder or of a different type of challenge for the initiator and responder.
Mitigation
Phase: Architecture and Design
Description:
- Let the initiator prove its identity before proceeding.
CAPEC-90: Reflection Attack in Authentication Protocol
An adversary can abuse an authentication protocol susceptible to reflection attack in order to defeat it. Doing so allows the adversary illegitimate access to the target system, without possessing the requisite credentials. Reflection attacks are of great concern to authentication protocols that rely on a challenge-handshake or similar mechanism. An adversary can impersonate a legitimate user and can gain illegitimate access to the system by successfully mounting a reflection attack during authentication.