exploit the possibilities

SAP Java OS Remote Code Execution

SAP Java OS Remote Code Execution
Posted Apr 6, 2021
Site onapsis.com

A malicious authenticated attacker could abuse some particular services exposed by the SAP JAVA Netweaver allowing them to execute commands in the underlying operating system. SAP Netweaver JAVA versions 7.30 through 7.50 are affected.

tags | advisory, java
advisories | CVE-2020-26820
MD5 | 17d21dafdf0937311a146d93f842bdf8

SAP Java OS Remote Code Execution

Change Mirror Download
# Onapsis Security Advisory 2021-0004: [CVE-2020-26820] - SAP Java OS
Remote Code Execution

## Impact on Business

A malicious authenticated attacker could abuse some particular services
by the SAP JAVA Netweaver allowing them to execute commands in the
operating system.

## Advisory Information

- Security Advisory ID: ONAPSIS-2021-0004
- Vulnerability Submission ID: 847
- Researcher: Pablo Artuso

## Vulnerability Information

- Vendor: SAP
- Affected Components:
- SAP Netweaver JAVA version 7.30 - 7.50

(Check SAP Note 2979062 for detailed information on affected releases)

- Vulnerability Class: [CWE-434] Unrestricted Upload of File with
Dangerous Type
- CVSS v3 score: 9.1 (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
- Severity: Critical
- Assigned CVE: CVE-2020-26820
- Vendor patch Information: SAP Security NOTE 2979062

## Affected Components Description

SAP NetWeaver JAVA is a foundational layer which is used by several
SAP products, such as:

- SAP Enterprise portal
- SAP Solution Manager
- SAP Landscape Manager
- among others.

Due to the vulnerable components resides in this "foundational layer", all
products running on top of SAP JAVA NetWeaver will be affected by this

## Vulnerability Details

A particular component (UDDI SERVER) of the SAP JAVA Netweaver layer,
exposes a functionality which allows authenticated attackers to upload
resources. In particular, at least the NWA_SUPERADMIN privileges are needed
to be able to use the upload process. Due to lack of controls, these files
are not checked and therefore any type of files could be uploaded,
resulting in the possibility of executing commands in the underlying OS.

## Solution

SAP has released SAP Note 2979062 which provide patched versions of the
affected components.

The patches can be downloaded from

Onapsis strongly recommends SAP customers to download the related security
fixes and apply them to the affected components in order to reduce business

## Report Timeline

- 10/05/2020: Onapsis sends details to SAP
- 10/05/2020: SAP provides internal ID’s.
- 10/12/2020: SAP confirms vulnerability and assigns CVSSv3 score of 9.1
- 11/10/2020: SAP releases patch.

## References

* Onapsis blogpost:
* CVE Mitre: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26820
* Vendor Patch: https://launchpad.support.sap.com/#/notes/2979062

## About Onapsis Research Labs

Onapsis Research Labs provides the industry analysis of key security issues
that impact business-critical systems and applications. Delivering frequent
and timely security and compliance advisories with associated risk levels,
Onapsis Research Labs combine in-depth knowledge and experience to deliver
technical and business-context with sound security judgment to the broader
information security community.

Find all reported vulnerabilities at

## About Onapsis, Inc.

Onapsis protects the mission-critical applications that run the global
economy, from the core to the cloud. The Onapsis Platform uniquely delivers
actionable insight, secure change, automated
governance and continuous monitoring for critical systems—ERP, CRM, PLM,
HCM, SCM and BI applications—from leading vendors such as SAP, Oracle,
Salesforce and others.

Onapsis is headquartered in Boston, MA, with offices in Heidelberg, Germany
and Buenos Aires, Argentina. We proudly serve more than 300 of the world’s
leading brands, including 20% of the Fortune 100, 6 of the top 10
automotive companies, 5 of the top 10 chemical companies,
4 of the top 10 technology companies and 3 of the top 10 oil and gas

The Onapsis Platform is powered by the Onapsis Research Labs, the team
responsible for the discovery and mitigation of more than 800 zero-day
vulnerabilities in mission-critical applications.
The reach of our threat research and platform is broadened through leading
consulting and audit firms such as Accenture, Deloitte, IBM, PwC and
Verizon—making Onapsis solutions the standard in helping organizations
protect their cloud, hybrid and on-premises mission-critical
information and processes.

For more information, connect with us on Twitter or LinkedIn, or visit us
at https://www.onapsis.com.

This email and any files transmitted with it are confidential and intended
solely for the use of the individual or entity to whom they are addressed.
If you have received this email in error please notify the system manager.
This message contains confidential information and is intended only for the
individual named. If you are not the named addressee you should not
disseminate, distribute or copy this e-mail.
Please notify the sender
immediately by e-mail if you have received this e-mail by mistake and
delete this e-mail from your system. If you are not the intended recipient
you are notified that disclosing, copying, distributing or taking any
action in reliance on the contents of this information is strictly

Login or Register to add favorites

File Archive:

April 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Apr 1st
    17 Files
  • 2
    Apr 2nd
    2 Files
  • 3
    Apr 3rd
    2 Files
  • 4
    Apr 4th
    0 Files
  • 5
    Apr 5th
    15 Files
  • 6
    Apr 6th
    15 Files
  • 7
    Apr 7th
    20 Files
  • 8
    Apr 8th
    16 Files
  • 9
    Apr 9th
    5 Files
  • 10
    Apr 10th
    0 Files
  • 11
    Apr 11th
    0 Files
  • 12
    Apr 12th
    4 Files
  • 13
    Apr 13th
    15 Files
  • 14
    Apr 14th
    27 Files
  • 15
    Apr 15th
    19 Files
  • 16
    Apr 16th
    7 Files
  • 17
    Apr 17th
    1 Files
  • 18
    Apr 18th
    1 Files
  • 19
    Apr 19th
    19 Files
  • 20
    Apr 20th
    18 Files
  • 21
    Apr 21st
    0 Files
  • 22
    Apr 22nd
    0 Files
  • 23
    Apr 23rd
    0 Files
  • 24
    Apr 24th
    0 Files
  • 25
    Apr 25th
    0 Files
  • 26
    Apr 26th
    0 Files
  • 27
    Apr 27th
    0 Files
  • 28
    Apr 28th
    0 Files
  • 29
    Apr 29th
    0 Files
  • 30
    Apr 30th
    0 Files

Top Authors In Last 30 Days

File Tags


packet storm

© 2020 Packet Storm. All rights reserved.

Security Services
Hosting By