Vulnerability Name:

CCN-77878

Published:2012-08-20
Updated:2012-08-20
Summary:Microsoft could allow a remote attacker to obtain sensitive information, caused by known cryptographic weaknesses in the MS-CHAP v2 protocol. By performing man-in-the-middle attacks or by intercepting open wireless traffic, an attacker could exploit this vulnerability to decrypt a user's credentials and authenticate the attacker to network resources.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CCN CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N)
3.5 Low (CCN Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N/E:U/RL:W/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Consequences:Obtain Information
References:Source: CCN
Type: Microsoft Security Advisory (2743314)
Unencapsulated MS-CHAP v2 Authentication Could Allow Information Disclosure

Source: XF
Type: UNKNOWN
ms-mschapv2-info-disc(77878)

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:microsoft:windows:xp:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:*:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:windows_2003:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    microsoft windows xp
    microsoft windows vista *
    microsoft windows 2003 *
    microsoft windows 7 *
    microsoft windows server 2008 *