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CVE-2016-10743

Status Candidate

Overview

hostapd before 2.6 does not prevent use of the low-quality PRNG that is reached by an os_random() function call.

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
Ubuntu Security Notice USN-3944-1
Posted Apr 11, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu 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.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2016-10743, CVE-2019-9495, CVE-2019-9498, CVE-2019-9499
SHA-256 | 5cd1105b2e54bffc81e4ab1e2261cd73be7cd130544105c2d7414ca3f2dcf45e
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