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CVE-2019-9498

HIGHCVSS 8.1/10EPSS 2.39%

Last modified

CVE-2019-9498 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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. EPSS estimates a 2.39% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
2.39%

81.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
W1.FiHostapd<= 2.4
W1.FiHostapd>= 2.5, <= 2.7
W1.FiWpa Supplicant<= 2.4
W1.FiWpa Supplicant>= 2.5, <= 2.7
FedoraprojectFedora28
FedoraprojectFedora29
FedoraprojectFedora30
OpensuseBackports Sle15.0
OpensuseLeap15.1
DebianDebian Linux8.0
SynologyRadius Server3.0
SynologyRouter Manager1.2
FreebsdFreebsd>= 11.0, <= 11.1
FreebsdFreebsd11.2
FreebsdFreebsd12.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-9498?
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.
How severe is CVE-2019-9498?
CVE-2019-9498 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 2.39% probability of exploitation in the next 30 days.
How do I fix CVE-2019-9498?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-9498?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST