SAP Patches Multiple XSS and Missing Authorization Vulnerabilities

SAP on Tuesday released its first set of monthly security patches for 2017, which addresses numerous Cross-Site Scripting (XSS) and Missing Authorization Check issues across its products.

The enterprise software giant included 18 Patch Day Security Notes in the January set of security patches, one of which was rated Hot News with a CVSS score of 9.8. SAP also addressed one High risk issue this month, along with 15 Medium, and one Low severity bug.

SAP’s Security Patch Day also includes 4 Support Package Notes, for a total of 23 vulnerabilities addressed across products, ERPScan, a company that specializes in securing SAP applications, explains. While 2 of the Notes are updates to previously released Security Notes, 4 of them were released after the second Tuesday of the previous month and before the second Tuesday of this month.

This month, SAP resolved 7 Missing Authorization Checks, 5 XSS flaws, 3 Directory traversal bugs, 2 SQL Injection vulnerabilities, 2 Implementation flaws, one Denial of service bug, one information disclosure issue, one XML external entity bug, and one Buffer overflaw.

The most severe of the issues was the Buffer overflaw, which consisted of multiple vulnerabilities found in SAP Sybase Asset Management. By leveraging this bug, an attacker could inject malicous code into memory and cause a vulnerable application to execute it. The executed commands would run with the same privileges as the service that executes it.

The vulnerability could be exploited to take complete control of an application, to cause denial of service, to execute arbitrary commands, and perform other nefarious actions, ERPScan says.

Another critical issue addressed this month was an SQL Injection vulnerability (CVSS Base Score: 6.4) in SAP Business Intelligence platform, which could allow an attacker using specially crafted SQL queries (SQL injection attack) to read and modify sensitive information from a database, execute administration operations on a database, remove data or make it unavailable.

Additionally, SAP patched a Cross-Site Scripting vulnerability (CVSS Base Score: 6.1) in SAP Enterprise Portal Theme Editor, which could allow an attacker to inject a malicious script into a page.

SAP also addressed a series of vulnerabilities discovered by ERPScan researchers, including a Denial of service vulnerability in SAP Single Sign-On (CVSS Base Score: 7.5), an XML external entity vulnerability in SAP Netweaver Visual Composer (CVSS Base Score: 6.4), a Cross-Site Scripting vulnerability in SAP Enterprise Portal Real Time Collaboration (CVSS Base Score: 6.1), and an SQL Injection vulnerability in SAP Netweaver UDDI Server (CVSS Base Score: 4.1).

The DoS vulnerability in the SAP SSO solution could allow an attacker to crash or flood the service, which would prevent legitimate users from accessing all linked applications, ERPScan explains. The SSO (Single Sign-On) was designed as a mechanism that allows user to use one set of login credentials instead of numerous sets of passwords, thus offering enhanced security levels and protection for sensitive company and personal data.

SAP SSO technology should deliver secure access to SAP and non-SAP business applications across the whole landscape, while offering support for cloud and on-premises scenarios, offering single sign-on access through the web, mobile devices, and native SAP clients.

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