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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2019-9494
HistoryApr 17, 2019 - 2:29 p.m.

CVE-2019-9494

2019-04-1714:29:03
Debian Security Bug Tracker
security-tracker.debian.org
20
sae implementation
side channel attacks
cache access patterns
password recovery
hostapd
wpa_supplicant
cve-2019-9494

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 SAE in hostapd and wpa_supplicant are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. An attacker may be able to gain leaked information from a side channel attack that can be used for full password recovery. Both hostapd with SAE support and wpa_supplicant with SAE 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%