#VU40717 Buffer overflow in Jouni Malinen products - CVE-2015-4144

Vulnerability identifier: #VU40717

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-4144

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Opensuse
Operating systems & Components / Operating system
hostapd
Server applications / Remote access servers, VPN
wpa_supplicant
Server applications / Encryption software

Vendor: SUSE
Jouni Malinen

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The EAP-pwd server and peer implementation in hostapd and wpa_supplicant 1.0 through 2.4 does not validate that a message is long enough to contain the Total-Length field, which allows remote attackers to cause a denial of service (crash) via a crafted message.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Opensuse: 13.1 - 13.2

hostapd: 1.0 - 13.2

wpa_supplicant: 1.0 - 13.2

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External links
https://lists.opensuse.org/opensuse-updates/2015-06/msg00019.html
https://w1.fi/security/2015-4/eap-pwd-missing-payload-length-validation.txt
https://www.debian.org/security/2015/dsa-3397
https://www.openwall.com/lists/oss-security/2015/05/09/6
https://www.openwall.com/lists/oss-security/2015/05/31/6
https://www.ubuntu.com/usn/USN-2650-1
https://security.gentoo.org/glsa/201606-17

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.