National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-9495 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 3.7 LOW
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N (V3 legend)
Impact Score: 1.4
Exploitability Score: 2.2


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

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/ Mailing List Release Notes Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3/ Mailing List Release Notes Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/ Mailing List Release Notes Third Party Advisory
https://seclists.org/bugtraq/2019/May/40
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
https://w1.fi/security/2019-2/ Patch Vendor Advisory
https://www.synology.com/security/advisory/Synology_SA_19_16

Technical Details

Vulnerability Type (View All)

  • Use of a Broken or Risky Cryptographic Algorithm (CWE-327)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:w1.fi:hostapd:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.7
 cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.7

Configuration 2 ( hide )
 cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

8 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-9495
NVD Published Date:
04/17/2019
NVD Last Modified:
05/15/2019