CVE-2021-43890

Microsoft Windows AppX Installer Spoofing Vulnerability

App Installer

We have investigated reports of a spoofing vulnerability in AppX installer that affects Microsoft Windows. Microsoft is aware of attacks that attempt to exploit this vulnerability by using specially crafted packages that include the malware family known as Emotet/Trickbot/Bazaloader. An attacker could craft a malicious attachment to be used in phishing campaigns. The attacker would then have to convince the user to open the specially crafted attachment. Users whose accounts…

15. Dez 2021

Ausgewertete Quellen

• Microsoft
  https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43890
• Microsoft
  https://www.microsoft.com/en-us/security/blog/2023/12/28/financially-motivated-threat-actors-misusing-app-installer/
• Hinweis
  https://thehackernews.com/2023/12/microsoft-disables-msix-app-installer.html
• Hinweis
  https://www.bleepingcomputer.com/news/microsoft/microsoft-disables-msix-protocol-handler-abused-in-malware-attacks/
• CISA
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-43890
• CISA
  Microsoft Windows AppX Installer Spoofing Vulnerability
• NVD
  CVE-2021-43890