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Onapsis Security Advisory ONAPSIS-2016-042: SAP OS Command Injection in SCTC_REFRESH_CHECK_ENV

2016-10-03 13:20
Onapsis Security Advisory ONAPSIS-2016-042: SAP OS Command Injection in SCTC_REFRESH_CHECK_ENV

1. Impact on Business
By exploiting this vulnerability an authenticated user will be able to take full control of the system.

Risk Level: Critical

2. Advisory Information
- Public Release Date: 09/22/2016
- Last Revised: 09/22/2016
- Security Advisory ID: ONAPSIS-2016-042
- Onapsis SVS ID: ONAPSIS-00251
- CVE: CVE-2016-7435
- Researcher: Pablo Artuso
- Vendor Provided CVSS v3: 9.0 (AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H)
- Onapsis CVSS v3: 9.1 (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)

3. Vulnerability Information
- Vendor: SAP AG
- Affected Components: SAP Netweaver 7.40 SP 12
- Vulnerability Class: Improper Neutralization of Special Elements used in an OS Command (CWE-78)
- Remotely Exploitable: Yes
- Locally Exploitable: No
- Authentication Required: Yes
- Original Advisory: https://www.onapsis.com/research/security-advisories/sap-os-command-injection-sctcrefreshcheckenv

4. Affected Components Description
SAP NetWeaver is the SAP technological integration platform, on top of which, enterprise and business solutions are
developed and run.
In particular, SCTC is a subpackage of SAP_BASIS which holds technical configurations.

5. Vulnerability Details
The SCTC_REFRESH_CHECK_ENV function doesn't correctly sanitize variables used when executing CALL 'SYSTEM' statement,
allowing an attacker, with particular privileges, to execute any arbitrary OS command.

6. Solution
Implement SAP Security Note 2260344.

7. Report Timeline
- 11/26/2015: Onapsis provides vulnerability information to SAP AG.
- 11/27/2015: SAP AG confirms reception of vulnerability report.
- 01/12/2016: SAP reports fix is In Process.
- 03/08/2016: SAP releases SAP Security Note 2260344 fixing the vulnerability.
- 09/22/2016: Onapsis Releases Security Advisory.

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.

About Onapsis, Inc.
Onapsis provides the most comprehensive solutions for securing SAP and Oracle enterprise applications. As the leading
experts in SAP and Oracle cyber-security, Onapsis’ enables security and audit teams to have visibility, confidence and
control of advanced threats, cyber-risks and compliance gaps affecting their enterprise applications.

Headquartered in Boston, Onapsis serves over 180 Global 2000 customers, including 10 top retailers, 20 top energy firms
and 20 top manufacturers. Onapsis’ solutions are also the de-facto standard for leading consulting and audit firms such
as Accenture, IBM, Deloitte, E&Y, KPMG and PwC.

Onapsis solutions include the Onapsis Security Platform, which is the most widely-used SAP-certified cyber-security
solution in the market. Unlike generic security products, Onapsis’ context-aware solutions deliver both preventative
vulnerability and compliance controls, as well as real-time detection and incident response capabilities to reduce
risks affecting critical business processes and data. Through open interfaces, the platform can be integrated with
leading SIEM, GRC and network security products, seamlessly incorporating enterprise applications into existing
vulnerability, risk and incident response management programs.

These solutions are powered by the Onapsis Research Labs which continuously provide leading intelligence on security
threats affecting SAP and Oracle enterprise applications. Experts of the Onapsis Research Labs were the first to
lecture on SAP cyber-attacks and have uncovered and helped fix hundreds of security vulnerabilities to-date affecting
SAP Business Suite, SAP HANA, SAP Cloud and SAP Mobile applications, as well as Oracle JD Edwards and Oracle E-Business
Suite platforms.

For more information, please visit www.onapsis.com, or connect with us on Twitter, Google+, or LinkedIn.

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