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computer vulnerability announce CVE-2014-0317

Windows: brute force via SAMR

Synthesis of the vulnerability

An attacker can use SAMR to exploit a brute force, in order to guess the password of a Windows user.
Vulnerable software: Windows 2003, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows Vista, Windows XP.
Severity of this announce: 2/4.
Consequences of an intrusion: user access/rights.
Attacker's origin: intranet client.
Creation date: 11/03/2014.
Références of this computer vulnerability: 2934418, CERTFR-2014-AVI-122, CVE-2014-0317, MS14-016, VIGILANCE-VUL-14407.

Description of the vulnerability

The SAMR (Security Account Manager Remote) protocol is used to manipulate the user database.

However, the account lockout is not managed.

An attacker can therefore use SAMR to exploit a brute force, in order to guess the password of a Windows user.
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