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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2019-9495
HistoryApr 17, 2019 - 2:29 p.m.

CVE-2019-9495

2019-04-1714:29:03
Debian Security Bug Tracker
security-tracker.debian.org
17
eap-pwd
hostapd
wpa_supplicant
side-channel attacks
cache access patterns
vulnerability
memory access patterns
weak passwords
timing attack
cve-2019-9495

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.012

Percentile

85.5%

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.

OSVersionArchitecturePackageVersionFilename
Debian12allwpa< 2:2.7+git20190128+0c1e29f-4wpa_2:2.7+git20190128+0c1e29f-4_all.deb
Debian11allwpa< 2:2.7+git20190128+0c1e29f-4wpa_2:2.7+git20190128+0c1e29f-4_all.deb
Debian999allwpa< 2:2.7+git20190128+0c1e29f-4wpa_2:2.7+git20190128+0c1e29f-4_all.deb
Debian13allwpa< 2:2.7+git20190128+0c1e29f-4wpa_2:2.7+git20190128+0c1e29f-4_all.deb

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.012

Percentile

85.5%