Vulnerability identifier: #VU23963
Vulnerability risk: High
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-264
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 escalate privileges on the system.
The vulnerability exists due to the implementations of EAP-PWD in hostapd EAP Server, when built against a crypto library missing explicit validation on imported elements, do not validate the scalar and element values in EAP-pwd-Commit. A remote attacker can use invalid scalar/element values to complete authentication.
This vulnerability affects the following products:
Mitigation
Install updates from vendor's website.
Vulnerable software versions
hostapd: 1.0 - 2.7
wpa_supplicant: 1.0 - 2.7
External links
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/2019-4/
http://www.synology.com/security/advisory/Synology_SA_19_16
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.