CVE-2019-9495

Description

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.

Weakness classification

• CWE-203: Observable Discrepancy
• CWE-524: Use of Cache Containing Sensitive Information

Primary references

• cret@cert.org — Mailing List, Third Party Advisory
• cret@cert.org — Third Party Advisory, VDB Entry
• cret@cert.org — Mailing List, Third Party Advisory
• cret@cert.org
• cret@cert.org
• cret@cert.org
• cret@cert.org — Mailing List, Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Patch, Vendor Advisory
• cret@cert.org — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry