Vulnerability identifier: #VU11270

Vulnerability risk: Low

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

CVE-ID: CVE-2015-5315

CWE-ID: CWE-805

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
wpa_supplicant
Server applications / Encryption software

Vendor: Jouni Malinen

Description
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.

The weakness exists in the eap_pwd_process function due to missing last fragment length validation. A remote attacker can submit a large buffer fragment in an EAP-pwd message and cause the service to crash.

Mitigation
Update to version 2.6.

Vulnerable software versions

wpa_supplicant: 2.0.0 - 2.5

---

External links
http://w1.fi/security/2015-7/eap-pwd-missing-last-fragment-length-validation.txt

---

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.