CVE-2020-36223 Memory corruption in n/a
A double free and out-of-bounds read in OpenLDAP's Values Return Filter control handling allows attackers to crash the slapd service, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-36223?
CVE-2020-36223 is a high-severity memory corruption 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
A flaw was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Values Return Filter control handling, resulting in denial of service (double free and out-of-bounds read).
Which versions are affected by CVE-2020-36223?
1 open source package ship an affected version, including openldap. It affects 4 products.
| Package | Affected | Fixed in |
|---|---|---|
openldap Bitnami | All versions | 2.4.57 |
Products include Apple Mac Os X, Apple Macos, Debian Debian Linux, Openldap Openldap.
How do I fix CVE-2020-36223?
Upgrade openldap to 2.4.57 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-36223 being exploited?
There is no known exploitation of CVE-2020-36223 in the wild and no public exploit code.
Other vulnerabilities in Apple Mac Os X
Sources
Also known as ALPINE-CVE-2020-36223, BIT-openldap-2020-36223, CLEANSTART-2026-QP70058, DEBIAN-CVE-2020-36223, GHSA-gpx8-c343-gg78, JLSEC-2026-165 and 1 more.