CVE-2020-0878 Microsoft Edge and Internet Explorer Memory Corruption
Remote attackers can execute arbitrary code via crafted websites in Microsoft browsers, potentially gaining full system control if the user has administrative rights.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-0878?
CVE-2020-0878 is a medium-severity memory corruption vulnerability in Microsoft Chakracore, published on 11 Sep 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
<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>
Weakness: CWE-787
Which versions are affected by CVE-2020-0878?
It affects 3 products.
Products include Microsoft Chakracore, Microsoft Edge, Microsoft Internet Explorer.
How do I fix CVE-2020-0878?
No fix has been published for CVE-2020-0878 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 May 2022.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-0878 being exploited?
Yes. Attackers have exploited CVE-2020-0878 in the wild since at least 3 Nov 2021, including in ransomware campaigns.
Other vulnerabilities in Microsoft Chakracore
Sources
Also known as GHSA-6j33-6rqj-fh2m.