The eap_pwd_process function in eap_peer/eap_pwd.c in wpa_supplicant 2.x before 2.6 does not validate that the reassembly buffer is large enough for the final fragment when EAP-pwd is enabled in a network configuration profile, which allows remote attackers to cause a denial of service (process termination) via a large final fragment in an EAP-pwd message.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2015-5315 from the MITRE CVE dictionary dictionary and NIST NVD.
Not vulnerable. This issue did not affect the versions of wpa_supplicant as shipped with Red Hat Enterprise Linux 5, 6, and 7.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
Base Score | 2.9 |
---|---|
Base Metrics | AV:A/AC:M/Au:N/C:N/I:N/A:P |
Access Vector | Adjacent Network |
Access Complexity | Medium |
Authentication | None |
Confidentiality Impact | None |
Integrity Impact | None |
Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Platform | Package | State |
---|---|---|
Red Hat Enterprise Linux 7 | wpa_supplicant | Not affected |
Red Hat Enterprise Linux 6 | wpa_supplicant | Not affected |
Red Hat Enterprise Linux 5 | wpa_supplicant | Not affected |