CVE-2015-4146

Description

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.

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 1.31% Top 25%

Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory w1.fi

Affected: n/a n/a

References

Link	Tags
http://www.openwall.com/lists/oss-security/2015/05/31/6	mailing list
http://w1.fi/security/2015-4/0005-EAP-pwd-peer-Fix-asymmetric-fragmentation-behavior.patch
http://www.debian.org/security/2015/dsa-3397	vendor advisory
https://security.gentoo.org/glsa/201606-17	third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2650-1	vendor advisory
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	third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2015/05/09/6	mailing list

Frequently Asked Questions

What is the severity of CVE-2015-4146?: CVE-2015-4146 has been scored as a medium severity vulnerability.
How to fix CVE-2015-4146?: To fix CVE-2015-4146, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-4146 being actively exploited in the wild?: It is possible that CVE-2015-4146 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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