Access42 voert periodiek een analyse uit na de publicatie van nieuwe (ernstige) kwetsbaarheden. In de vulnerability update van november 2022 ligt de nadruk op kwetsbaarheden die betrekking hebben tot producten van Microsoft en Citrix.
Er zijn drie ernstige kwetsbaarheden gepubliceerd (CVE-2022-27510, CVE-2022-27513 en CVE-2022-27516) die betrekking hebben op producten van Citrix ADC en Citrix Gateway.
De meest prominente kwetsbaarheid kan leiden tot leiden tot ongeautoriseerd toegang tot gebruikersfunctionaliteiten, indien gebruik wordt gemaakt van een VPN (Gateway).
Kwetsbaarheden
Dreiging
Op dit moment is er (nog) geen informatie of deze kwetsbaarheden actief misbruikt worden in aanvallen. Maar gezien de voorliefde van aanvallers voor Citrix-kwetsbaarheden is de aanbeveling van Citrix om deze kwetsbaarheid “zo snel mogelijk” te verhelpen op zijn plaats.
Advies
Klanten met een Citrix ADC en Citrix Gateway worden geadviseerd om de relevante geüpdate versie zo snel mogelijk te installeren. Raadpleeg de Citrix vendor informatie voor de laatste en juiste informatie.
Microsoft heeft op 8 november 2022 nieuwe beveiligingsupdates uitgebracht. In deze updates worden in totaal 64 kwetsbaarheden gemitigeerd. Hiervan zijn 11 van deze kwetsbaarheden hebben een classificatie Critical en 53 de classificatie ‘belangrijk’.
Enkele prominente kwetsbaarheden, maar niet beperkt tot:
Dreiging
Er is dreigingsinformatie dat 6 zero-day kwetsbaarheden die actief misbruikt worden.
Advies
Pas de laatste Microsoft security updates om de kwetsbaarheden te mitigeren. Raadpleeg de vendor informatie van Microsoft voor de laatste informatie.
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