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CVE-2019-9495

Status Candidate

Overview

The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns. All versions of hostapd and wpa_supplicant with EAP-PWD support are vulnerable. The ability to install and execute applications is necessary for a successful attack. Memory access patterns are visible in a shared cache. Weak passwords may be cracked. Versions of hostapd/wpa_supplicant 2.7 and newer, are not vulnerable to the timing attack described in CVE-2019-9494. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.

Related Files

FreeBSD Security Advisory - FreeBSD-SA-19:03.wpa
Posted May 15, 2019
Site security.freebsd.org

FreeBSD Security Advisory - Multiple vulnerabilities exist in the hostapd(8) and wpa_supplicant(8) implementations.

tags | advisory, vulnerability
systems | freebsd, bsd
advisories | CVE-2019-9494, CVE-2019-9495, CVE-2019-9496, CVE-2019-9497
MD5 | 71ae117c46b8fba957049dd0f7eb8d5a
Debian Security Advisory 4430-1
Posted Apr 11, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4430-1 - Mathy Vanhoef (NYUAD) and Eyal Ronen (Tel Aviv University & KU Leuven) found multiple vulnerabilities in the WPA implementation found in wpa_supplication (station) and hostapd (access point). These vulnerability are also collectively known as "Dragonblood".

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2019-9495, CVE-2019-9497, CVE-2019-9498, CVE-2019-9499
MD5 | 35b4c189ef466a37b606c3102e6f20ea
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
MD5 | 5d54f16798fb2dfd07a893e5dee4bf02
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