Microsoft Edge and Internet Explorer Memory Corruption Vulnerability
<p>A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the…
Gravité = CVSS. Probabilité = EPSS (FIRST). Exploitation = signaux publics : KEV, EUVD, rançongiciel, EPSS au-dessus de 10 %, accès sans compte.
Probabilité d’exploitation EPSS · FIRST
Signaux d’exploitation 4 / 5
- Catalogue KEV (CISA)03/11/2021
- EUVD exploitée (ENISA)03/11/2021
- Utilisée par des rançongicielsoui
- EPSS au-dessus de 10 %2,7 %
- Sans compte, par le réseauoui
Que faire
Corriger
Appliquer le correctif de l’éditeur dès qu’il est disponible.
Consigne de la CISA : Apply updates per vendor instructions.
En attendant
Retirer le service d’internet ou en filtrer l’accès, surveiller les journaux et chercher des traces de compromission.
Éditeurs (CRA)
Faille exploitée dans votre produit : alerte précoce à l’ENISA sous 24 h, puis notification sous 72 h (article 14 du Cyber Resilience Act). Le CRA expliqué
Description ENISA EUVD
<p>A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.</p> <p>An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft browsers, and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically via an enticement in email or instant message, or by getting them to open an email attachment.</p> <p>The security update addresses the vulnerability by modifying how Microsoft browsers handle objects in memory.</p>
Texte de la source, en anglais.
Produits touchés
- 0 <publication
- 1.0.0 <publication
- 1.0..0 <publication
Paquets open source OSV
Bibliothèques touchées selon OSV, avec les versions corrigées.
Chronologie
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Publication
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Exploitation signalée (ENISA)
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Ajout au catalogue KEV
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Échéance de correction CISA
Références
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