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CVE-2019-10064

Status Candidate

Overview

hostapd before 2.6, in EAP mode, makes calls to the rand() and random() standard library functions without any preceding srand() or srandom() call, which results in inappropriate use of deterministic values. This was fixed in conjunction with CVE-2016-10743.

Related Files

Hostapd Insufficient Entropy
Posted Feb 29, 2020
Authored by Jonathan Brossard, Nicolas Massaviol

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.

tags | advisory, protocol
advisories | CVE-2016-10743, CVE-2019-10064
SHA-256 | 2d166b553a0342f96415f97cd97caa0cedc98fd50d33edcf18d27bde29fcd3c7
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