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vulnerability alert CVE-2015-2503 CVE-2015-6038 CVE-2015-6091

Microsoft Office, Lync: multiple vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of Microsoft Office.
Impacted systems: Lync, Office, Access, Office Communicator, Excel, OneNote, Outlook, PowerPoint, Project, Publisher, MOSS, Visio, Word, Skype for Business.
Severity of this alert: 3/4.
Consequences of an intrusion: administrator access/rights, privileged access/rights, user access/rights, denial of service on service, denial of service on client.
Pirate's origin: document.
Number of vulnerabilities in this bulletin: 7.
Creation date: 10/11/2015.
Références of this alert: 3104540, CERTFR-2015-AVI-473, CVE-2015-2503, CVE-2015-6038, CVE-2015-6091, CVE-2015-6092, CVE-2015-6093, CVE-2015-6094, CVE-2015-6123, MS15-116, VIGILANCE-VUL-18281, ZDI-15-539, ZDI-15-543, ZDI-15-546.

Description of the vulnerability

Several vulnerabilities were announced in Microsoft Office.

An attacker can generate a memory corruption, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2015-6038, ZDI-15-543]

An attacker can generate a memory corruption, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2015-6091]

An attacker can generate a memory corruption, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2015-6092]

An attacker can generate a memory corruption, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2015-6093, ZDI-15-539]

An attacker can generate a memory corruption, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2015-6094, ZDI-15-546]

An attacker can bypass security features, in order to escalate his privileges. [severity:2/4; CVE-2015-2503]

An attacker can deceive the user, in order to redirect him to a malicious site. [severity:1/4; CVE-2015-6123]
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