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CVE-2019-9499

Status Candidate

Overview

The implementations of EAP-PWD in wpa_supplicant EAP Peer, when built against a crypto library missing explicit validation on imported elements, do not validate the scalar and element values in EAP-pwd-Commit. An attacker may complete authentication, session key and control of the data connection with a client. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.

Related Files

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
SHA-256 | e4cc520a6f88594171e81ee3cde6f6aec1740ca7d34b2fc6ac799e9719e96151
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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