MS09-071: Vulnerabilities in Internet Authentication Service Could Allow Remote Code Execution (974318)

critical Nessus Plugin ID 43063
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The remote Windows host has multiple vulnerabilities in an authentication service.


The remote Windows host has the following vulnerabilities in the Internet Authentication Service :

- There is a memory corruption vulnerability in the PEAP authentication implementation. A remote, unauthenticated attacker could exploit this to execute arbitrary code as SYSTEM. (CVE-2009-2505)

- Sending a specially crafted MS-CHAP v2 authentication request could allow a remote attacker to obtain the privileges of a specific, authorized user. (CVE-2009-3677)


Microsoft has released a set of patches for Windows 2000, XP, 2003, Vista, and 2008.

See Also

Plugin Details

Severity: Critical

ID: 43063

File Name: smb_nt_ms09-071.nasl

Version: 1.22

Type: local

Agent: windows

Published: 12/8/2009

Updated: 8/5/2020

Dependencies: ms_bulletin_checks_possible.nasl, smb_hotfixes.nasl

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:*

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 12/8/2009

Vulnerability Publication Date: 12/8/2009

Reference Information

CVE: CVE-2009-2505, CVE-2009-3677

BID: 37197, 37198

CWE: 94, 255, 287

MSFT: MS09-071

MSKB: 974318

IAVA: 2009-A-0126-S