Bug 1277865 (CVE-2015-5316) - CVE-2015-5316 wpa_supplicant: EAP-pwd peer error path failure on unexpected Confirm message
Summary: CVE-2015-5316 wpa_supplicant: EAP-pwd peer error path failure on unexpected C...
Alias: CVE-2015-5316
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On:
Blocks: 1277868
TreeView+ depends on / blocked
Reported: 2015-11-04 09:33 UTC by Martin Prpič
Modified: 2021-02-17 04:45 UTC (History)
1 user (show)

Fixed In Version: wpa_supplicant 2.6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2015-11-04 09:37:11 UTC

Attachments (Terms of Use)
CVE-2015-5316 patch (1.05 KB, text/plain)
2015-11-04 09:34 UTC, Martin Prpič
no flags Details

Description Martin Prpič 2015-11-04 09:33:47 UTC
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.

Vulnerable versions/configurations:

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

External References:


Comment 1 Martin Prpič 2015-11-04 09:34:36 UTC
Created attachment 1089509 [details]
CVE-2015-5316 patch

Comment 2 Martin Prpič 2015-11-04 09:37:11 UTC
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.

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