Cisco CHAP Authentication Vulnerabilities - Cisco Systems

A serious security vulnerability bug ID CSCdi91594 exists in PPP CHAP authentication in all "classic" Cisco IOS software versions the software used on Cisco non-switch products with product numbers greater than or equal to 1000, on the AGS/AGS+/CGS/MGS, and on the CS-500, but not on Catalyst...

Authentication flaw

The 1 CHAP and 2 MS-CHAP-V2 authentication capabilities in the PPP Access Concentrator PPPAC function in Internet Initiative Japan SEIL/B1 firmware 1.00 through 2.52 use the same challenge for each authentication attempt, which allows remote attackers to bypass authentication via a replay attack...

CVE-2009-4409: Improper Authentication

The 1 CHAP and 2 MS-CHAP-V2 authentication capabilities in the PPP Access Concentrator PPPAC function in Internet Initiative Japan SEIL/B1 firmware 1.00 through 2.52 use the same challenge for each authentication attempt, which allows remote attackers to bypass authentication via a replay attack...

Microsoft Windows IAS服务MS-CHAP请求绕过认证漏洞（MS09-071）

BUGTRAQ ID: 37198 CVE ID: CVE-2009-3677 Microsoft Windows是微软发布的非常流行的操作系统。 Windows的Internet认证服务中存在权限提升漏洞，发送了恶意MS-CHAP v2认证请求的攻击者可以以特定授权用户的权限获得对网络资源的访问。 Microsoft Windows XP SP3 Microsoft Windows XP SP2 Microsoft Windows Vista SP1 Microsoft Windows Vista Microsoft Windows Server 2008 Microsoft...

Memory corruption

The Internet Authentication Service IAS in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed...

Authentication flaw

The Internet Authentication Service IAS in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold and SP1, and Server 2008 Gold does not properly verify the credentials in an MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication request, which allows remote...

CVE-2009-2505

The Internet Authentication Service IAS in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed...

CVE-2009-2505

CVE-2009-2505 is a remote code execution flaw in Internet Authentication Service (IAS) on Windows Vista SP2 and Windows Server 2008 SP2, caused by improper validation during MS-CHAP v2 over PEAP. The vulnerability stems from incorrect memory handling when processing PEAP authentication requests, ...

CVE-2009-2505

The Internet Authentication Service IAS in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed...

CVE-2009-3677

The Internet Authentication Service IAS in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold and SP1, and Server 2008 Gold does not properly verify the credentials in an MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication request, which allows remote...

CVE-2009-3677

CVE-2009-3677 describes an elevation-of-privilege bypass in the Internet Authentication Service (IAS) used by Microsoft Windows products. The issue arises because MS-CHAP v2 authentication requests sent over PEAP are not properly validated, allowing remote attackers to gain access to network reso...

JVN#49602378 SEIL/B1 authentication issue

The PPP Access Concentrator PPPAC function within SEIL/B1 contains an issue in the CHAP and MS-CHAP-V2 authentication processes, the same challenge value is repeatedly used for each authentication attempt. Impact A third party may be able to perform replay attacks. As a result, the third party ma...

Microsoft Internet Authentication Service multiple security vulnerabilities

MS-CHAP authentication bypass, memory corruption...

CVE-2009-2505: Improper Authentication

The Internet Authentication Service IAS in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed...

CVE-2009-3677: Improper Control of Generation of Code

The Internet Authentication Service IAS in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold and SP1, and Server 2008 Gold does not properly verify the credentials in an MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication request, which allows remote...

Microsoft Windows IAS Remote Code Execution Vulnerability (974318)

This host is missing a critical security update according to Microsoft Bulletin MS09-071. SPDX-FileCopyrightText: 2009 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only...

Microsoft Internet Authentication Service MS-CHAP Security Bypass (MS09-071; CVE-2009-3677)

An elevation of privilege vulnerability has been reported in the Internet Authentication Service. Internet Authentication Service IAS is the Microsoft implementation of a Remote Authentication Dial-in User Service RADIUS server and proxy. As a RADIUS server, IAS performs centralized connection...

Wireshark CHAP dissector crash

The Check Point High-Availability Protocol CPHAP dissector in Wireshark 0.9.6 through 1.0.6 allows remote attackers to cause a denial of service crash via a crafted FWHAMYSTATE packet...

asleap - offline LEAP authentication hacking

MS-CHAP NTLM vulnerability allows offline passwords attacks...

Mac OS X pppd format string vulnerability

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 @stake, Inc. www.atstake.com Security Advisory Advisory Name: Mac OS X pppd format string vulnerability Release Date: 02/23/2004 Application: pppd 2.4.0 Platform: Mac OS X 10.3.2 and below Severity: Local users are able to retrieve PAP/CHAP credential...