Vulnerability Details : CVE-2015-4146
The EAP-pwd peer implementation in hostapd and wpa_supplicant 1.0 through 2.4 does not clear the L (Length) and M (More) flags before determining if a response should be fragmented, which allows remote attackers to cause a denial of service (crash) via a crafted message.
Vulnerability category: Denial of service
Products affected by CVE-2015-4146
- cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:hostapd:1.0:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:hostapd:1.1:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:hostapd:2.2:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:hostapd:2.0:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:hostapd:2.1:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:hostapd:2.3:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:hostapd:2.4:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:2.0:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:2.1:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:2.2:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:1.0:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:1.1:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:2.3:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:2.4:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-4146
1.32%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 78 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-4146
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
References for CVE-2015-4146
-
http://www.debian.org/security/2015/dsa-3397
Debian -- Security Information -- DSA-3397-1 wpa
-
https://security.gentoo.org/glsa/201606-17
hostapd and wpa_supplicant: Multiple vulnerabilities (GLSA 201606-17) — Gentoo securityThird Party Advisory
-
http://w1.fi/security/2015-4/0005-EAP-pwd-peer-Fix-asymmetric-fragmentation-behavior.patch
-
http://www.openwall.com/lists/oss-security/2015/05/31/6
oss-security - Re: CVE request: vulnerability in wpa_supplicant and hostapd
-
http://www.openwall.com/lists/oss-security/2015/05/09/6
oss-security - Re: CVE request: vulnerability in wpa_supplicant and hostapd
-
http://w1.fi/security/2015-4/eap-pwd-missing-payload-length-validation.txt
Vendor Advisory
-
http://lists.opensuse.org/opensuse-updates/2015-06/msg00019.html
openSUSE-SU-2015:1030-1: moderate: Recommended update for wpa_supplicantThird Party Advisory
-
http://www.ubuntu.com/usn/USN-2650-1
USN-2650-1: wpa_supplicant and hostapd vulnerabilities | Ubuntu security notices
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