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gentooGentoo FoundationGLSA-201711-03
HistoryNov 10, 2017 - 12:00 a.m.

hostapd and wpa_supplicant: Key Reinstallation (KRACK) attacks

2017-11-1000:00:00
Gentoo Foundation
security.gentoo.org
151

8.1 High

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

5.8 Medium

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:A/AC:L/Au:N/C:P/I:P/A:P

0.004 Low

EPSS

Percentile

72.4%

JSON

Background

wpa_supplicant is a WPA Supplicant with support for WPA and WPA2 (IEEE 802.11i / RSN). hostapd is a user space daemon for access point and authentication servers.

Description

WiFi Protected Access (WPA and WPA2) and it’s associated technologies are all vulnerable to the KRACK attacks. Please review the referenced CVE identifiers for details.

Impact

An attacker can carry out the KRACK attacks on a wireless network in order to gain access to network clients. Once achieved, the attacker can potentially harvest confidential information (e.g. HTTP/HTTPS), inject malware, or perform a myriad of other attacks.

Workaround

There is no known workaround at this time.

Resolution

All hostapd users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-wireless/hostapd-2.6-r1"

All wpa_supplicant users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose
 ">=net-wireless/wpa_supplicant-2.6-r3"
OSVersionArchitecturePackageVersionFilename
Gentooanyallnet-wireless/hostapd< 2.6-r1UNKNOWN
Gentooanyallnet-wireless/wpa_supplicant< 2.6-r3UNKNOWN

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8.1 High

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

5.8 Medium

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:A/AC:L/Au:N/C:P/I:P/A:P

0.004 Low

EPSS

Percentile

72.4%

JSON
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