Low severity · published Apr 17, 2019
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
3.7
CVSS
3.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.5% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BS
Backports Sle · Opensuse
15.0; 15.0 · source: NVD
DL
Debian Linux · Debian
8.0 · source: NVD
FE
Fedora · Fedoraproject
28; 29; 30 · source: NVD
FR
Freebsd · Freebsd
11.2; 11.2; 11.2; 11.2; 11.2; 11.2; +8 more · source: NVD
HO
Hostapd · W1.fi
through 2.7 · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
RS
Radius Server · Synology
3.0 · source: NVD
RM
Router Manager · Synology
before 1.2.3-8017 · source: NVD
WS
Wpa Supplicant · W1.fi
through 2.7 · source: NVD