CVE-2020-3849 Memory corruption in macOS

What is CVE-2020-3849?

CVE-2020-3849 is a critical memory corruption vulnerability in Apple Mac Os X, published on 1 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.

Weakness: CWE-787, CWE-20

Which versions are affected by CVE-2020-3849?

It affects 1 product.

Products include Apple Mac Os X.

How do I fix CVE-2020-3849?

No fix has been published for CVE-2020-3849 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-3849 being exploited?

There is no known exploitation of CVE-2020-3849 in the wild and no public exploit code.

Other vulnerabilities in Apple Mac Os X

• CVE-2014-7169 GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Exploited Critical 9.8
• CVE-2014-6271 GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Exploited Critical 9.8
• CVE-2012-1823 PHP-CGI Query String Parameter Exploited Critical 9.8
• CVE-2021-30713 Apple macOS Unspecified Exploited High 7.8
• CVE-2019-8526 Apple macOS Use-After-Free Exploited High 7.8

All Apple Mac Os X vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-ghcx-2fcr-868x.