In FreeRADIUS 3.0 through 3.0.19, on average 1 in every 2048 EAP-pwd handshakes fails because the password element cannot be found within 10 iterations of the hunting and pecking loop. This leaks information that an attacker can use to recover the password of any user. This information leakage is similar to the "Dragonblood" attack and CVE-2019-9494.
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
| Link | Tags |
|---|---|
| https://freeradius.org/security/ | vendor advisory |
| https://wpa3.mathyvanhoef.com | third party advisory exploit |
| https://bugzilla.redhat.com/show_bug.cgi?id=1737663 | patch exploit third party advisory issue tracking |
| https://github.com/FreeRADIUS/freeradius-server/commit/3ea2a5a026e73d81cd9a3e9bbd4300c433004bfa | third party advisory patch |
| http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html | vendor advisory mailing list third party advisory |