MS15-104: Vulnerabilities in Skype for Business Server and Lync Server Could Allow Elevation of Privilege (3089952)

This script is Copyright (C) 2015-2017 Tenable Network Security, Inc.


Synopsis :

The remote host is affected by multiple vulnerabilities.

Description :

The remote Windows host is missing a security update. It is,
therefore, affected by multiple cross-site scripting vulnerabilities
in Skype for Business Server and Lync Server :

- A cross-site scripting vulnerability exists in Skype for
Business Server and Lync Server due to a failure by the
jQuery engine to properly sanitize specially crafted
content. An unauthenticated, remote attacker can exploit
this vulnerability by convincing a user to open a
malicious URL, resulting in the execution of arbitrary
script code in the user's browser to gain information
from web sessions. (CVE-2015-2531)

- A cross-site scripting vulnerability exists in Lync
Server due to improper sanitization of specially crafted
content. An unauthenticated, remote attacker can exploit
this vulnerability by convincing a user to open a
malicious URL, resulting in the execution of arbitrary
script code in the user's browser to gain information
from web sessions. (CVE-2015-2532)

- A cross-site scripting vulnerability exists in Skype for
Business Server and Lync Server due to improper
sanitization of specially crafted content. A remote,
unauthenticated attacker can exploit this by convincing
a user to open a malicious URL, resulting in the
execution of arbitrary script code in the user's browser
to gain elevated privileges. (CVE-2015-2536)

See also :

https://technet.microsoft.com/library/security/ms15-104

Solution :

Microsoft has released a set of patches for Microsoft Lync Server 2013
and Skype for Business Server 2015.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.7
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Windows : Microsoft Bulletins

Nessus Plugin ID: 85849 ()

Bugtraq ID: 76600
76601
76603

CVE ID: CVE-2015-2531
CVE-2015-2532
CVE-2015-2536

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