Advisory

On 10.01.2023 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within Java.

SAP Note 3268093 addresses "[CVE-2023-0017] Improper access control in SAP NetWeaver AS for Java" to prevent missing authentication check with a hot news risk for exploitation.

A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance, the team suggests.

Risk specification

An unauthenticated attacker can attach to an open interface and use an open naming and directory API to access services that can perform unauthorized operations affecting users and data on the current system. This could allow the attacker to have full read access to user data, modify user data and make particular services within the system unavailable.

Solution

Instead of relying on generic authorization checks, new service actions have been introduced for the JCo RFC Provider.

Affected System

SAP Netweaver Application Server Java is part of the SAP NetWeaver Application Platform. It provides the complete infrastructure for deploying and running Java applications.

The AS Java Home: SAP Netweaver Application Server Java wiki
A dedicated SAP NetWeaver 7.40 Application Server for Java Security Guide exists.

The advisory is valid for

J2EE-FRMW 7.50 ⁶

Releated advisories

Disclaimer

SecurityBridge takes the security of SAP products very seriously. We very much encourage the responsible disclosure of security vulnerabilities. If you have detected a vulnerability concerning one of the SAP software products – either in the latest or in a former product version follow the guidelines and processes in accordance with the SAP portal page “Report a Security Vulnerability to SAP”.

The advisories found within the SecurityBridge advisory are generated and continuously enriched by our Team at SecurityBridge and affiliated security consultants, partners, customers of the SecurityBridge Platform, SAP support, and advisory groups.

We do not disclose zero-day vulnerabilities unless a security patch has been made available to the public. In such case, the platform only provides details on which version or signature updates are available within the SecurityBridge platform in order to monitor or measure the vulnerability.

In accordance with SAP guidelines, SecurityBridge only discloses issues where the fixing security note has been released. The vulnerability platform makes no references to available exploits or Proof of Concepts (PoC). Advisories and vulnerabilities will always mention the fixing security note or hints to the corresponding SAP documentation.

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Notifications

Affected system Java

CVSS 9.4

Component BC-MID-CON-JCO

Patch Day2023-01

Released on2023/01/10

SAP Note 3268093

Workaround No

Advisory

Risk specification

Solution

Affected System

Disclaimer

_{Affected system}
Java

_CVSS
9.4

_Component
BC-MID-CON-JCO

_{Patch Day}
2023-01

_{Released
on}
2023/01/10

_{SAP Note}
3268093

_Workaround
No