Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2019-9495

Disclosure Date: April 17, 2019 •
CVE-2019-9495 CVSS v3 Base Score: 3.7
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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.

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CVSS V3 Severity and Metrics
Base Score:
3.7 Low
Impact Score:
1.4
Exploitability Score:
2.2
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
High
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
Low
Integrity (I):
None
Availability (A):
None

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
hostapd with EAP-pwd support 2.7
wpa_supplicant with EAP-pwd support 2.7
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • debian,
  • fedoraproject,
  • freebsd,
  • opensuse,
  • synology,
  • w1.fi

Products

  • backports sle 15.0,
  • debian linux 8.0,
  • fedora 28,
  • fedora 29,
  • fedora 30,
  • freebsd 11.2,
  • freebsd 12.0,
  • hostapd,
  • leap 15.1,
  • radius server 3.0,
  • router manager,
  • wpa supplicant
Technical Analysis