CVE-2021-38178 - Incorrect Authorization

Severity

88%

Complexity

27%

Confidentiality

98%

The software logistics system of SAP NetWeaver AS ABAP and ABAP Platform versions - 700, 701, 702, 710, 730, 731, 740, 750, 751, 752, 753, 754, 755, 756, enables a malicious user to transfer ABAP code artifacts or content, by-passing the established quality gates. By this vulnerability malicious code can reach quality and production, and can compromise the confidentiality, integrity, and availability of the system and its data.

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

Type

SAP NetWeaver AS ABAP

First reported 3 years ago

2021-10-12 15:15:00

Last updated 3 years ago

2021-10-19 00:50:00

Affected Software

SAP NetWeaver AS ABAP 700

700

SAP NetWeaver AS ABAP 701

701

SAP NetWeaver AS ABAP 702

702

SAP NetWeaver AS ABAP 710

710

SAP NetWeaver AS ABAP 730

730

SAP NetWeaver AS ABAP 731

731

SAP NetWeaver AS ABAP 740

740

SAP NetWeaver AS ABAP 750

750

SAP NetWeaver AS ABAP 751

751

SAP NetWeaver AS ABAP 752

752

SAP NetWeaver AS ABAP 753

753

SAP NetWeaver AS ABAP 754

754

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