CVE-2019-9495
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.
EPSS 6.89% · 91.6th percentile
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | wpa | 0, 2:2.4-1.1ubuntu1, 2:2.6-15ubuntu1 |
| Ubuntu:16.04:LTS | wpa | 2.4-0ubuntu6.3, 0, 2.4-0ubuntu3 |
| Ubuntu:14.04:LTS | wpa | 0, 1.0-3ubuntu4, 2.1-0ubuntu1 |
Timeline
- Apr 10, 2019 CVE Published
- Apr 14, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Mar 7, 2023 EPSS Score
- May 13, 2023 EPSS Score
- Sep 15, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-9495 third-party-advisory
- https://w1.fi/security/2019-2/ third-party-advisory
- https://ubuntu.com/security/notices/USN-3944-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-9495 third-party-advisory