Heap-based buffer overflow in hostapd

1) Heap-based buffer overflow

EUVDB-ID: #VU32434

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-4445

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the eap_server_tls_process_fragment function in eap_server_tls_common.c in the EAP authentication server in hostapd 0.6 through 1.0. A remote attacker can use a small to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update to version 1.1.

Vulnerable software versions

hostapd: 0.6.0 - 1.0

External links

http://osvdb.org/86051
http://secunia.com/advisories/50805
http://secunia.com/advisories/50888
http://w1.fi/gitweb/gitweb.cgi?p=hostap.git;a=commitdiff;h=586c446e0ff42ae00315b014924ec669023bd8de
http://www.debian.org/security/2012/dsa-2557
http://www.freebsd.org/security/advisories/FreeBSD-SA-12:07.hostapd.asc
http://www.mandriva.com/security/advisories?name=MDVSA-2012:168
http://www.openwall.com/lists/oss-security/2012/10/08/3
http://www.pre-cert.de/advisories/PRE-SA-2012-07.txt
http://www.securityfocus.com/bid/55826
http://www.securitytracker.com/id?1027808
http://exchange.xforce.ibmcloud.com/vulnerabilities/79104

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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