CVE-2019-18191 - Incorrect Authorization

Severity

88%

Complexity

27%

Confidentiality

98%

A privilege escalation vulnerability in the Trend Micro Deep Security as a Service Quick Setup cloud formation template could allow an authenticated entity with certain unrestricted AWS execution privileges to escalate to full privileges within the target AWS account.

A privilege escalation vulnerability in the Trend Micro Deep Security as a Service Quick Setup cloud formation template could allow an authenticated entity with certain unrestricted AWS execution privileges to escalate to full privileges within the target AWS account.

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

Incorrect Authorization

CWE-863

The following code could be for a medical records application. It displays a record to already authenticated users, confirming the user's authorization using a value stored in a cookie.


               
}
}
setcookie("role", $role, time()+60*60*2);
die("\n");
DisplayMedicalHistory($_POST['patient_ID']);
die("You are not Authorized to view this record\n");

The programmer expects that the cookie will only be set when getRole() succeeds. The programmer even diligently specifies a 2-hour expiration for the cookie. However, the attacker can easily set the "role" cookie to the value "Reader". As a result, the $role variable is "Reader", and getRole() is never invoked. The attacker has bypassed the authorization system.

Overview

First reported 5 years ago

2019-12-16 21:15:00

Last updated 5 years ago

2019-12-31 19:17:00

Affected Software

Trendmicro Deep Security As A Service

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