openEuler update for wpa_supplicant

1) Information disclosure

EUVDB-ID: #VU20415

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-13377

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to conduct time-based side-channel attacks on a targeted system.

The vulnerability exists due to insufficient security restrictions during the WPA3's Dragonfly handshake process when using Brainpool curves. A remote in radio range of the access point can observe timing differences and cache access patterns, conduct a side-channel attack and access sensitive information that could be used for full password recovery.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

wpa_supplicant-help: before 2.6-27

wpa_supplicant-gui: before 2.6-27

wpa_supplicant-debugsource: before 2.6-27

wpa_supplicant-debuginfo: before 2.6-27

wpa_supplicant: before 2.6-27

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1019

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.