CVE-2019-9495

hostapd: The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of ca...

CVE-2019-9495 is fixed in 3 products on 1 platform, first by hostapd 2:2.6-15ubuntu2.2, released April 10, 2019. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0348
89th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
hostapd · Ubuntu 18.04.6 LTS (bionic) 2:2.6-15ubuntu2.2 hostapd 2:2.6-15ubuntu2.2 Apr 10, 2019
wpagui · Ubuntu 18.04.6 LTS (bionic) 2:2.6-15ubuntu2.2 wpagui 2:2.6-15ubuntu2.2 Apr 10, 2019
wpasupplicant · Ubuntu 18.04.6 LTS (bionic) 2:2.6-15ubuntu2.2 wpasupplicant 2:2.6-15ubuntu2.2 Apr 10, 2019