CVE-2020-8468 - Download of Code Without Integrity Check

Severity

88%

Complexity

27%

Confidentiality

98%

Trend Micro Apex One (2019), OfficeScan XG and Worry-Free Business Security (9.0, 9.5, 10.0) agents are affected by a content validation escape vulnerability which could allow an attacker to manipulate certain agent client components. An attempted attack requires user authentication.

Trend Micro Apex One (2019), OfficeScan XG and Worry-Free Business Security (9.0, 9.5, 10.0) agents are affected by a content validation escape vulnerability which could allow an attacker to manipulate certain agent client components. An attempted attack requires user authentication.

CVSS 3.1 Base Score 8.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 6.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:S/C:P/I:P/A:P).

Demo Examples

Download of Code Without Integrity Check

CWE-494

This example loads an external class from a local subdirectory.


               
Class loadedClass = Class.forName("loadMe", true, loader);
new URL("file:subdir/")

This code does not ensure that the class loaded is the intended one, for example by verifying the class's checksum. An attacker may be able to modify the class file to execute malicious code.

Download of Code Without Integrity Check

CWE-494

This code includes an external script to get database credentials, then authenticates a user against the database, allowing access to the application.


               
}//assume the password is already encrypted, avoiding CWE-312
}//dbInfo.php makes $dbhost, $dbuser, $dbpass, $dbname available
return true;
return false;

This code does not verify that the external domain accessed is the intended one. An attacker may somehow cause the external domain name to resolve to an attack server, which would provide the information for a false database. The attacker may then steal the usernames and encrypted passwords from real user login attempts, or simply allow himself to access the application without a real user account.

This example is also vulnerable to a MITM (CWE-300) attack.

Overview

Type

Trend Micro

First reported 5 years ago

2020-03-18 01:15:00

Last updated 5 years ago

2020-03-19 18:54:00

Affected Software

Trend Micro Apex One 2019

2019

Trend Micro OfficeScan XG

xg

Trend Micro OfficeScan Service Pack 1

xg

Trend Micro Worry-Free Business Security 9.0 Service Pack 3

9.0

Trend Micro Worry-Free Business Security 9.5

9.5

Trend Micro Worry-Free Business Security 10.0

10.0

Trend Micro Worry-Free Business Security 10.0 Service Pack 1

10.0

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