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  • SAP Security Notes – February 2018 addresses tens of flaws including High Risk issues

SAP Security Notes – February 2018 addresses tens of flaws including High Risk issues

Pierluigi Paganini February 15, 2018

SAP Security Notes – February 2018: SAP Security Notes February 2018 addressed several vulnerabilities including High-Risk flaws.

SAP has released February 2018 Patches that addressed some high-risk vulnerabilities in its software, a total of 26 Security Notes (5 high-, 19 medium- and 2 low-risk). Once again, the missing authorization check is the most common vulnerability type this month.

The Security Notes SAP addresses three cross-site scripting (XSS) vulnerabilities, two directory traversal flaws, two information disclosure bugs, two missing authorization checks, one unrestricted file upload, and other issues.

Affected products are the Internet Graphics Server (IGS), NetWeaver System Landscape Directory, HANA Extended Application Services, ABAP File Interface, SAP CRM, ERP Financials Information System, Netweaver Portal, Netweaver Java Web Application, CRM WebClient UI, BI Launchpad, and SAP HANA.

“On 13th of February 2018, SAP Security Patch Day saw the release of 11 Security Notes. Additionally, there were 3 updates to previously released security notes.” reads the advisory published by SAP.

SAP Security Notes Feb 2018

SAP also addressed previous Security Notes that includes an incorrect authorization check in ERP Logistics, a cross-site request forgery (CSRF) vulnerability in SAP Sybase, and a flaw that ties the way the SAP Note Assistant handles digitally signed notes.

Three critical vulnerabilities were reported by Mathieu Geli, Vahagn Vardanyan, and Vladimir Egorov, researchers at ERPScan security firm.

The details of the issues fixed thanks to the support of the researchers are:

  • A Missing Authentication check vulnerability in SAP NetWeaver System Landscape Directory (CVSS Base Score: 8.3 CVE-2018-2368). Update is available in SAP Security Note 2565622. An attacker can use Missing authorization check vulnerability for access to a service without any authorization procedures and use service functionality that has restricted access. This can lead to an information disclosure, privilege escalation and other attacks.
  • A Directory Traversal vulnerability in SAP Internet Sales (CVSS Base Score: 6.6 CVE-2018-2380). Update is available in SAP Security Note 2547431. An attacker can use Directory traversal to access to arbitrary files and directories located in a SAP-server file system including application source code, configuration and system files. It allows to obtain critical technical and business-related information stored in a vulnerable SAP-system.
  • An Information Disclosure vulnerability in SAP HANA (CVSS Base Score: 5.3 CVE-2018-2369). Update is available in SAP Security Note 2572940. An attacker can use Information disclosure vulnerability for revealing additional information (system data, debugging information, etc) which will help to learn about a system and to plan other attacks.

The most severe vulnerability addressed by the security updates is a missing authentication check in SAP NetWeaver System Landscape Directory tracked as CVE-2018-2368, which received a CVSS base score of 8.3.

The flaw could be exploited by an attacker to access a service without any authorization, a circumstance that could lead to several attacks, including the privilege escalation and information disclosure,

“A Missing Authentication check vulnerability in SAP NetWeaver System Landscape Directory (CVSS Base Score: 8.3 CVE-2018-2368). Update is available in SAP Security Note 2565622. An attacker can use Missing authorization check vulnerability for access to a service without any authorization procedures and use service functionality that has restricted access. This can lead to an information disclosure, privilege escalation and other attacks.” continues ERPScan.

The updates also addressed:

  • A Directory Traversal vulnerability in SAP Internet Sales (CVSS Base Score: 6.6 CVE-2018-2380) that could be exploited by an attacker to use Directory traversal to access to arbitrary files and directories located in a SAP-server file system including application source code, configuration and system files.
  • An Information Disclosure vulnerability in SAP HANA (CVSS Base Score: 5.3 CVE-2018-2369). that could be exploited by an attacker for revealing additional information (system data, debugging information, etc).

Other vulnerabilities addressed this month included a directory traversal (CVE-2018-2367) in SAP ABAP File Interface (CVSS base score: 6.6) and a directory traversal (CVE-2018-2380) in SAP Internet Sales (CVSS base score: 6.6).

Further info related to the flaws addressed by SAP are available on the company blog.

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Pierluigi Paganini

(Security Affairs – SAP Security Notes February 2018, cybersecurity)

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