CVE-2020-36221 Integer overflow in n/a

What is CVE-2020-36221?

CVE-2020-36221 is a high-severity vulnerability in Apple Mac Os X, published on 25 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, resulting in denial of service (schema_init.c serialNumberAndIssuerCheck).

Weakness: CWE-191

Which versions are affected by CVE-2020-36221?

1 open source package ship an affected version, including openldap. It affects 4 products.

Products include Apple Mac Os X, Apple Macos, Debian Debian Linux, Openldap Openldap.

How do I fix CVE-2020-36221?

Upgrade openldap to 2.4.57 or later.

Is CVE-2020-36221 being exploited?

There is no known exploitation of CVE-2020-36221 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 ALPINE-CVE-2020-36221, BIT-openldap-2020-36221, CLEANSTART-2026-HK58158, DEBIAN-CVE-2020-36221, GHSA-xm66-m73v-859r, JLSEC-2026-163 and 1 more.