Exploitalert - Database of Exploits

Microsoft SharePoint 2007 Cross Site Scripting

CVE	Category	Price	Severity
CVE-2007-6750	CWE-79	$500	High

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2011-09-20

CPE
cpe:cpe:/a:microsoft:sharepoint_server:2007

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	Low	PR	The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
Scope		S	An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized.
Confidentiality	Low	C	There is some impact on confidentiality, but the attacker either does not gain control of any data, or the information obtained does not have a significant impact on the system or its operations.
Integrity	Low	I	Modification of data is possible, but the attacker does not have control over what can be modified, or the extent of what the attacker can affect is limited. The data modified does not have a direct, serious impact on the system.
Availability	None	A	There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.

http://cxsecurity.com/ascii/WLB-2011090072

Seeker Research Center Security Advisory This vulnerability was discovered by Seeker® Automatic Run-Time Application Security Testing Solution Disclosed By Irene Abezgauz, September 13th, 2011 ========= I. Overview ========= A Cross Site Scripting vulnerability has been identified in Microsoft SharePoint 2007. This vulnerability allows attackers to gain control over valid user accounts, perform operations on their behalf, redirect them to malicious sites, steal their credentials, and more. A friendly formatted version of this advisory is available at: http://www.seekersec.com/Advisories/SeekerAdvMS04.html ======= II. Details ======= The Contact Details Tool Pane web part is vulnerable to cross site scripting attacks in the parameter ctl00$MSOTlPn_EditorZone$Edit0g_7aaa0c6d_72f5_4717_9b22_80188ffdbcde$peopleEditor$hiddenSpanData= By manipulating an unsuspecting user into submitting a specially crafted form an attacker causes the victim to send the malicious script to the vulnerable SharePoint 2007 instance. The malicious script is then reflected back to the user and executed on his browser. The Contact Details Tool Pane is an out-of-the-box component, accessible from various locations in SharePoint 2007 in which the Contact Details web-part is present. The exploit in this advisory has been produced when editing Report Center. ======= III. Exploit ======= Sample exploitation of this vulnerability would be crafting the following request: POST /Reports/Pages/Default.aspx HTTP/1.1 ? ctl00$MSOTlPn_EditorZone$Edit0g_7aaa0c6d_72f5_4717_9b22_80188ffdbcde$peopleEditor$hiddenSpanData=<script>alert(?SeekerSec?)</script> The request also contains other parameters required by the page, the vulnerable parameter being the parameter noted above. It seems that when a script is simply placed into the input field there is a client-side encoding of the parameter value, which is insufficient to prevent attacks as directly (not via client) submitted scripts simply do not undergo such validation. ================ IV. Affected Systems ================ Microsoft SharePoint 2007 ======== V. Solution ======== Microsoft has released a fix for this vulnerability, see http://technet.microsoft.com/security/bulletin/MS11-074 for further information. ======= VI. Credit ======= The vulnerability was automatically discovered by Seeker® - New generation application security testing solution, utilizing ground breaking BRITE? technology (Behavioral Runtime Intelligent Testing Engine). Further research and publication was performed by Irene Abezgauz, Product Manager, Seeker Security. For more information please visit www.seekersec.com ----------------- Irene Abezgauz Product Manager Seeker Security www.seekersec.com E-Mail: [email protected]

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