MGASA-2019-0229 - Updated wpa_supplicant and hostapd packages fix security vulnerability

Publication date: 31 Aug 2019
URL: https://advisories.mageia.org/MGASA-2019-0229.html
Type: security
Affected Mageia releases: 7
CVE: CVE-2019-9494

A number of potential side channel attacks were discovered in the SAE
implementations used by both hostapd (AP) and wpa_supplicant
(infrastructure BSS station/mesh station). SAE (Simultaneous
Authentication of Equals) is also known as WPA3-Personal. The discovered
side channel attacks may be able to leak information about the used
password based on observable timing differences and cache access
patterns. This might result in full password recovery when combined with
an offline dictionary attack and if the password is not strong enough to
protect against dictionary attacks.

References:
- https://bugs.mageia.org/show_bug.cgi?id=25258
- https://w1.fi/security/2019-1/sae-side-channel-attacks.txt
- https://w1.fi/security/2019-6/sae-eap-pwd-side-channel-attack-update.txt
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9494

SRPMS:
- 7/core/wpa_supplicant-2.9-1.1.mga7
- 7/core/hostapd-2.9-1.mga7

Mageia 2019-0229: wpa_supplicant and hostapd security update

A number of potential side channel attacks were discovered in the SAE implementations used by both hostapd (AP) and wpa_supplicant (infrastructure BSS station/mesh station)

Summary

A number of potential side channel attacks were discovered in the SAE implementations used by both hostapd (AP) and wpa_supplicant (infrastructure BSS station/mesh station). SAE (Simultaneous Authentication of Equals) is also known as WPA3-Personal. The discovered side channel attacks may be able to leak information about the used password based on observable timing differences and cache access patterns. This might result in full password recovery when combined with an offline dictionary attack and if the password is not strong enough to protect against dictionary attacks.

References

- https://bugs.mageia.org/show_bug.cgi?id=25258

- https://w1.fi/security/2019-1/sae-side-channel-attacks.txt

- https://w1.fi/security/2019-6/sae-eap-pwd-side-channel-attack-update.txt

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9494

Resolution

MGASA-2019-0229 - Updated wpa_supplicant and hostapd packages fix security vulnerability

SRPMS

- 7/core/wpa_supplicant-2.9-1.1.mga7

- 7/core/hostapd-2.9-1.mga7

Severity
Publication date: 31 Aug 2019
URL: https://advisories.mageia.org/MGASA-2019-0229.html
Type: security
CVE: CVE-2019-9494

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