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vulnerability announce CVE-2014-0253 CVE-2014-0257 CVE-2014-0295

Microsoft .NET: multiple vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of Microsoft .NET.
Vulnerable systems: .NET Framework, Windows 2003, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows 7, Windows 8, Windows RT, Windows Vista, Windows XP.
Severity of this threat: 3/4.
Consequences of a hack: privileged access/rights, user access/rights, data reading, denial of service on service.
Pirate's origin: document.
Number of vulnerabilities in this bulletin: 3.
Creation date: 11/02/2014.
Revisions dates: 12/02/2014, 25/09/2014.
Références of this weakness: 2916607, BID-65415, BID-65417, BID-65418, CERTFR-2014-AVI-064, CVE-2014-0253, CVE-2014-0257, CVE-2014-0295, MS14-009, VIGILANCE-VUL-14222.

Description of the vulnerability

Several vulnerabilities were announced in Microsoft .NET.

An attacker can use a POST query to generate an error in the processing of stale or closed HTTP client connections, in order to trigger a denial of service. This vulnerability has the same origin than VIGILANCE-VUL-8809. [severity:2/4; BID-65415, CVE-2014-0253]

An attacker can execute a special method, in order to escape the sandbox, to escalate his privileges. [severity:3/4; BID-65417, CVE-2014-0257]

An attacker can use vsab7rt.dll, in order to obtain sensitive information about the memory layout, to bypass ASLR. [severity:1/4; BID-65418, CVE-2014-0295]
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