Red Hat Bugzilla – Bug 1277865
CVE-2015-5316 wpa_supplicant: EAP-pwd peer error path failure on unexpected Confirm message
Last modified: 2015-11-11 06:50:27 EST
The following flaw was reported in wpa_supplicant:
A vulnerability was found in EAP-pwd peer implementation used in wpa_supplicant. If an EAP-pwd Confirm message is received unexpectedly before the Identity exchange, the error path processing ended up dereferencing a NULL pointer and terminating the process.
For wpa_supplicant with EAP-pwd enabled in a network configuration profile, this could allow a denial of service attack by an attacker within radio range.
wpa_supplicant v1.0-v2.5 with CONFIG_EAP_PWD=y in the build configuration (wpa_supplicant/.config) and EAP-pwd enabled in a network profile at runtime.
Possible mitigation steps
- Disable EAP-pwd in runtime configuration
Created attachment 1089509 [details]
Affected code does not exist in wpa_supplicant versions in Red Hat Enterprise Linux 6 and earlier. The wpa_supplicant packages in Red Hat Enterprise Linux 7 and Fedora are not built with the CONFIG_EAP_PWD configuration option and hence are also unaffected.
Not vulnerable. This issue did not affect the versions of wpa_supplicant as shipped with Red Hat Enterprise Linux 5, 6, and 7.