#VU23959 Information disclosure in hostapd and wpa_supplicant


Published: 2020-01-06

Vulnerability identifier: #VU23959

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-9494

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
hostapd
Server applications / Remote access servers, VPN
wpa_supplicant
Server applications / Encryption software

Vendor: Jouni Malinen

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the implementations of SAE are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. A remote attacker can gain leaked information from a side channel attack that can be used for full password recovery.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

hostapd: 1.0 - 2.7

wpa_supplicant: 1.0 - 2.7


External links
http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/
http://seclists.org/bugtraq/2019/May/40
http://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
http://w1.fi/security/2019-1/
http://www.synology.com/security/advisory/Synology_SA_19_16


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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


Latest bulletins with this vulnerability