POS: Security Flaws allows hacker to change price, steal data


Researchers at ERPScan discovered that SAP’s POS product, that is a component of the company’s SAP for Retail giving, was stricken by many flaws. Specifically, the system’s server element, Xpress Server, lacked necessary authorization checks for vital practicality.

This allows AN assailant with access to the system to send malicious configuration files to Xpress Server and gain complete management of each the frontend and backend of the PoS system.

A hacker will abuse tens of commands, permitting them to steal knowledge from all the credit and debit cards used at the targeted store, and apply special costs and discounts to such that things. These discounts is applied for such that times in order that AN item contains a tiny value only fraudsters visit purchase it. Fraudsters may also got wind of the system in order that their purchases area unit charged to the previous customer’s card.

An assailant may also modification the info displayed on a receipt, as well as to show the customer’s full payment card variety, not simply the last four digits as needed.

An attack needs access to the targeted network. However, specialists recognized that thereforeme systems area unit exposed to the net so remote attacks could also be potential. If the PoS system isn't connected to the net, AN assailant might plant the malware employing a Raspberry Pi device that's connected to the targeted store’s network. ERPScan noted that the inner network will typically be accessed from the electronic scales obtainable in stores.

Some technical details were disclosed by ERPScan researchers during a presentation at the Hack within the Box (HITB) security conference happening on in Singapore.

SAP, whose retail solutions area unit employed by eighty p.c of the Forbes international 2000 retailers, was informed  concerning the vulnerabilities in April and free a patch in Gregorian calendar month as a part of its regular security updates. However, the corporate free another update on August eighteen when researchers discovered that the initial fix may be bypassed via a replacement flaw. 
  
ERPScan researchers recognized that these varieties of vulnerabilities don't seem to be specific to SAP merchandise. they need conjointly found similar flaws in Oracle’s MICROS system.

“Many POS systems have similar design and therefore same vulnerabilities,” aforementioned ERPScan’s Dmitry Chastuhin, one in every of the researchers United Nations agency found the vulnerabilities. “POS terminals wont to be infested with vulnerabilities as myriads of them were found and, sadly, exploited, therefore their security posture has improved considerably. On the opposite hand, banks should adhere to totally different compliance standards. So, the connections between POS digital computer and also the store server prove to be the weakest link. They lack the fundamentals of cybersecurity - authorization procedures and secret writing, and no-one cares concerning it. So, once AN assailant is within the Network, he or she gains full management of the system.”

Read Full white paper:

White Paper on POS System Flow


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