CVE-2015-5314 Information

Description

The eap_pwd_process function in eap_server/eap_server_pwd.c in hostapd 2.x before 2.6 does not validate that the reassembly buffer is large enough for the final fragment when used with (1) an internal EAP server or (2) a RADIUS server and EAP-pwd is enabled in a runtime configuration which allows remote attackers to cause a denial of service (process termination) via a large final fragment in an EAP-pwd message.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://w1.fi/security/2015-7/eap-pwd-missing-last-fragment-length-validation.txt http://www.openwall.com/lists/oss-security/2015/11/10/10 http://www.ubuntu.com/usn/USN-2808-1 https://www.debian.org/security/2015/dsa-3397

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.9