CVE-2022-23943 mod_sed: Read/write beyond bounds

What is CVE-2022-23943?

CVE-2022-23943 is a critical memory corruption vulnerability in Apache Http Server, published on 14 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Out-of-bounds Write vulnerability in mod_sed of Apache HTTP Server allows an attacker to overwrite heap memory with possibly attacker provided data. This issue affects Apache HTTP Server 2.4 version 2.4.52 and prior versions.

Weakness: CWE-787, CWE-190

Which versions are affected by CVE-2022-23943?

1 open source package ship an affected version, including apache. It affects 5 products.

Products include Apache Http Server, Debian Debian Linux, Fedoraproject Fedora, Oracle Http Server, Oracle Zfs Storage Appliance Kit.

How do I fix CVE-2022-23943?

Upgrade apache to 2.4.53 or later.

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

Is CVE-2022-23943 being exploited?

There is no known exploitation of CVE-2022-23943 in the wild and no public exploit code.

Other vulnerabilities in Apache Http Server

• CVE-2021-42013 Apache HTTP Server Path Traversal Exploited Critical 9.8
• CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Exploited Critical 9.1
• CVE-2021-40438 Apache HTTP Server-Side Request Forgery (SSRF) Exploited Critical 9.0
• CVE-2019-0211 Apache HTTP Server Privilege Escalation Exploited High 7.8
• CVE-2021-41773 Apache HTTP Server Path Traversal Exploited High 7.5

All Apache Http Server vulnerabilities

Sources

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

Also known as ALPINE-CVE-2022-23943, AZL-9018, BIT-apache-2022-23943, CLEANSTART-2026-RW21782, DEBIAN-CVE-2022-23943, GHSA-778r-vp3x-2f8c and 1 more.