CVE-2021-1878 Integer overflow in macOS

What is CVE-2021-1878?

CVE-2021-1878 is a medium-severity vulnerability in Apple Mac Os X, published on 8 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. An attacker in a privileged network position may be able to leak sensitive user information.

Weakness: CWE-190

Which versions are affected by CVE-2021-1878?

It affects 2 products.

Products include Apple Mac Os X, Apple Macos.

How do I fix CVE-2021-1878?

No fix has been published for CVE-2021-1878 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-1878 being exploited?

There is no known exploitation of CVE-2021-1878 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-9h5x-7fqr-xqgx.