CVE Number – CVE-2015-5315
A vulnerability in the eap_peer/eap_pwd.c source code of wpa_supplicant could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.
The vulnerability exists in the eap_pwd_process function, and is due to improper memory operations that are performed by the affected software. An attacker could exploit this vulnerability by submitting a large buffer fragment in an EAP-pwd message to a targeted system. A successful exploit could allow the attacker to cause the process to terminate, resulting in a DoS condition.
The vendor has confirmed the vulnerability and released software updates.
To exploit this vulnerability, the attacker may need access to trusted or internal networks. This access requirement could reduce the likelihood of a successful exploit.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to monitor affected systems.
The vendor has released a security bulletin at the following link: EAP-pwd missing last fragment length validation
The vendor has released software updates at the following link: wpa_supplicant 2.6
Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.