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vulnerability bulletin CVE-2012-2531 CVE-2012-2532

IIS FTP: two vulnerabilities

Synthesis of the vulnerability

An attacker can use two vulnerabilities of the FTP service of IIS, in order to obtain information.
Impacted products: IIS, Windows 2008 R0, Windows 2008 R2, Windows 7, Windows Vista.
Severity: 2/4.
Creation date: 14/11/2012.
Identifiers: 2733829, BID-56439, BID-56440, CERTA-2012-AVI-647, CVE-2012-2531, CVE-2012-2532, MS12-073, VIGILANCE-VUL-12143.

Description of the vulnerability

The IIS product provides a FTP service. However, two vulnerabilities impact this service.

A local attacker can read the log file, in order to discover passwords of users of the FTP service. [severity:2/4; BID-56439, CVE-2012-2531]

When the FTP server rejects the anonymous authentication, and uses TLS, an attacker can send some FTP commands, in order to obtain information. [severity:2/4; BID-56440, CVE-2012-2532]

An attacker can therefore use two vulnerabilities of the FTP service of IIS, in order to obtain information.
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