Dell has released a security update to fix a vulnerability in the support software it uses (SupportAssist Client). SupportAssist allows users from the same Network Access layer who are not authenticated to remotely run malicious executables on vulnerable computers.
Σύμφωνα με τον ιστότοπο της εταιρείας, το λογισμικό SupportAssist είναι "προεγκατεστημένο στις περισσότερες από τις νέες συσκευές της Dell που τρέχουν με το λειτουργικό system των Windows" και "ελέγχει ενεργά την υγεία του hardware αλλά και του λογισμικού του συστήματος. Όταν ανακαλύπτει ένα πρόβλημα το αποστέλλει στην Dell για να ξεκινήσει την αντιμετώπιση προβλημάτων."
Most new Dell computers are exposed to Remote Code Execution (RCE) attacks.
The defect of the software has been reported as CVE-2019-3719 (CVSSv3) that reaches 8.0 from the National Vulnerability Database (or NVD)).
Dell updated SupportAssist software at the end of April of 2019 after an initial report received from a 17 security researcher (Bill Demirkapi) on 10 October 2018.
Dell advises all its clients to update the SupportAssist Client as soon as possible by indicating that all versions prior to 3.2.0.90 are vulnerable to remote code execution attacks.
Dell reportedly also repaired an improper origin validation flaw in the SupportAssist Client software reported by John C. Hennessy-ReCar, which has been reported as CVE-2019-3718 with a high-grade 3.0 rating (CVSS v8,8).
Security researcher Bill Demirkapi has discovered that RCE vulnerability can be exploited by attackers using ARP and DNS violations such as describes in detail on proof-of-concept which he published.
Watch the video demo on YouTube that shows its PoC
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