Information disclosure in wpa_supplicant and hostapd - CVE-2019-13377
Published: August 27, 2019 / Updated: September 30, 2019
Vulnerability identifier: #VU20415
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-13377
CWE-ID: CWE-200
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Jouni Malinen
Affected software:
wpa_supplicant
hostapd
wpa_supplicant
hostapd
Detailed vulnerability description
The vulnerability allows a remote attacker to conduct time-based side-channel attacks on a targeted system.
The vulnerability exists due to insufficient security restrictions during the WPA3's Dragonfly handshake process when using Brainpool curves. A remote in radio range of the access point can observe timing differences and cache access patterns, conduct a side-channel attack and access sensitive information that could be used for full password recovery.
How to mitigate CVE-2019-13377
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.