Security

SAP April 2019 Security Patch Day addresses High severity flaws in Crystal Reports, NetWeaver

SAP released the April 2019 Security Patch Day that is included
6 Security Notes, two of which address High severity flaws in Crystal Reports and NetWeaver.

SAP released 6 Security Notes as part of the April 2019 Security Patch Day, two of which address High severity flaws in Crystal Reports and NetWeaver.

SAP April 2019 Security Patch Day addressed a High risk information disclosure issue in Crystal Reports tracked as CVE-2019-0285 (CVSS Base Score: 7.5). The vulnerability could allow an attacker to access details such as system data, debugging information, and other information.

Another High risk vulnerability fixed by SAP is a spoofing attack flaw affecting NetWeaver Java Application Server. The flaw, tracked as CVE-2019-0283 (CVSS Base Score: 7.1), could be exploited by an attacker to spoof the data being displayed to the user.

Below the other vulberabilities addressed this month by SAP:

Title
Update to security note release on February 2019 Patch Day:
[CVE-2019-0265] XML External Entity (XXE) vulnerability in SLD Registration of SAP NetWeaver and ABAP Platform
[CVE-2019-0279] Missing Authorization check for ABAP INST function module
[CVE-2019-0282] Information Disclosure in NetWeaver PI Runtime Workbench
[CVE-2019-0284] XML External Entity vulnerability in SAP HANA sldreg
[CVE-2019-0278] Information Disclosure in the SAP NetWeaver Process Integration (Messaging System)
Update to security note release on January 2019 Patch Day:
[CVE-2018-2484] Missing Authorization check in SAP Enterprise Financial Services

SAP also patched a critical XML External Entity vulnerability now patched in SAP HANA. This vulnerability is easily exploitable could be used in a targeted attack to remotely access critical files from the server and steal any web app custom code (confidentiality). The flaw could be also exploited to launch a Denial-of-Service (DoS) attack by stopping a Web App running on top of XSA, resulting in taking systems offline and making them unavailable (availability).

“Special attention should be paid to this critical vulnerability for its likelihood to be used in a targeted attack, based on its ease of exploitability and the potential negative impact to business continuity. If not patched, the vulnerability would allow an attacker to remotely access critical files from the server and steal any web app custom code (confidentiality).” reads the analysis published by security firm Onapsis. “The attacker could also generate a Denial-of-Service (DoS) attack by stopping a Web App running on top of XSA, resulting in taking systems offline and making them unavailable (availability).”

The April 2019 Security Patch Day also includes updates for three previous security notes, including the Hot News note that delivers security updates for the browser control Google Chromium delivered with SAP Business Client, released as part of the April 2018 Patch Day.

SAP also addressed an XXE bug in SLD Registration of NetWeaver and ABAP Platform (CVE-2019-0265), and a missing authorization check in Enterprise Financial Services (CVE-2018-2484).

Security firm ERPScan published an interesting analysis of the
April 2019 Security Patch Day, below the key findings included in the blog post published by the company:

  • The set for April 2019 consists of 13 security notes.
  • This month, Missing Authorization Check stays the most common vulnerability type.
  • SAP NetWeaver Java platform has the largest number of vulnerabilities fixed this month.

“Three notes are updates to the previous security note release. One of them received Hot News priority rating. The most severe security issue was assessed at 7.5 by CVSS base score. This time, Missing Authorization Check is still the largest group in terms of the number of vulnerabilities.”

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Pierluigi Paganini

(SecurityAffairs – April 2019 Security Patch Day, SAP)

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Pierluigi Paganini

Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer. Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US. Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines. Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.

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