Hostapd versions prior to 2.6 were not seeding PRNGs. This vulnerability has been fixed silently around 2016, but never attributed a CVE number, leading to many distributions and IoT devices still shipping this version of the software. In addition, it has been discovered that the Extensible Authentication Protocol (EAP) mode, which offers a protection against flooding attacks, also uses predictable PRNGs.
2d166b553a0342f96415f97cd97caa0cedc98fd50d33edcf18d27bde29fcd3c7Ubuntu Security Notice 3944-1 - It was discovered that wpa_supplicant and hostapd were vulnerable to a side channel attack against EAP-pwd. A remote attacker could possibly use this issue to recover certain passwords. Mathy Vanhoef discovered that wpa_supplicant and hostapd incorrectly validated received scalar and element values in EAP-pwd-Commit messages. A remote attacker could possibly use this issue to perform a reflection attack and authenticate without the appropriate password. Various other issues were also addressed.
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