SAP NetWeaver AS JAVA Missing XML Validation (3053066)

medium Nessus Plugin ID 150718

Synopsis

The remote SAP NetWeaver AS Java server may be affected by a missing XML validation vulnerability.

Description

SAP Netweaver Application Server Java versions 7.20, 7.30, 7.31, 7.40, and 7.50 allow an attacker authenticated as an administrator to connect over a network and submit a specially crafted XML file in the application because of missing XML Validation. This vulnerability enables an attacker to fully compromise confidentiality by allowing them to read any file on the filesystem or fully compromise availability by causing the system to crash. The attack cannot be used to change any data so that there is no compromise as to integrity.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Apply the appropriate patch according to the vendor advisory.

See Also

https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999

https://launchpad.support.sap.com/#/notes/3053066

Plugin Details

Severity: Medium

ID: 150718

File Name: sap_netweaver_as_3053066.nasl

Version: 1.3

Type: remote

Family: Web Servers

Published: 6/11/2021

Updated: 6/17/2021

Configuration: Enable paranoid mode

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

Vector: AV:N/AC:L/Au:S/C:P/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2021-27635

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:sap:netweaver_application_server

Required KB Items: installed_sw/SAP Netweaver Application Server (AS), Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2021

Vulnerability Publication Date: 6/8/2021

Reference Information

CVE: CVE-2021-27635

IAVA: 2021-A-0281