National Vulnerability Database (NVD) National Vulnerability Database (CVE-2012-4445)

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Last updated: Sat May 18 23:12:13 EDT 2013

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Vulnerability Summary for CVE-2012-4445

Original release date:10/10/2012

Last revised:04/19/2013

Source: US-CERT/NIST

Overview

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 allows remote attackers to cause a denial of service (crash or abort) via a small "TLS Message Length" value in an EAP-TLS message with the "More Fragments" flag set.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:4.3 (MEDIUM) (AV:N/AC:M/Au:N/C:N/I:N/A:P) (legend)

Impact Subscore: 2.9

Exploitability Subscore: 8.6

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Medium

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

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External Source: CONFIRM

Name: http://w1.fi/gitweb/gitweb.cgi?p=hostap.git;a=commitdiff;h=586c446e0ff42ae00315b014924ec669023bd8de

Type: Patch Information

Hyperlink:http://w1.fi/gitweb/gitweb.cgi?p=hostap.git;a=commitdiff;h=586c446e0ff42ae00315b014924ec669023bd8de

External Source: XF

Name: hostapd-eaptls-dos(79104)

Hyperlink:http://xforce.iss.net/xforce/xfdb/79104

External Source: BID

Name: 55826

Hyperlink:http://www.securityfocus.com/bid/55826

External Source: MISC

Name: http://www.pre-cert.de/advisories/PRE-SA-2012-07.txt