CVE-2019-9499 Auth bypass in hostapd with EAP-pwd support
Attackers can bypass authentication and control data connections in wpa_supplicant if EAP-PWD validation is missing due to library issues.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-9499?
CVE-2019-9499 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 17 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2019-9499?
It affects 9 products.
Products include Debian Debian Linux, Fedoraproject Fedora, Freebsd Freebsd, Opensuse Backports Sle, Opensuse Leap, Synology Radius Server and 3 more.
How do I fix CVE-2019-9499?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2019-9499 being exploited?
There is no known exploitation of CVE-2019-9499 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2019-9499, DEBIAN-CVE-2019-9499, GHSA-qppx-fffq-j22m, UBUNTU-CVE-2019-9499.