CVE-2020-1934 Memory corruption in Apache HTTP Server

What is CVE-2020-1934?

CVE-2020-1934 is a medium-severity memory corruption vulnerability in Apache Http Server, published on 1 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Apache HTTP Server 2.4.0 to 2.4.41, mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server.

Weakness: CWE-908

Which versions are affected by CVE-2020-1934?

1 open source package ship an affected version, including apache. It affects 11 products.

Products include Apache Http Server, Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Opensuse Leap, Oracle Communications Element Manager and 5 more.

How do I fix CVE-2020-1934?

Upgrade apache to 2.4.42 or later.

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

Is CVE-2020-1934 being exploited?

There is no known exploitation of CVE-2020-1934 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-2020-1934, BIT-apache-2020-1934, CLEANSTART-2026-EV87575, DEBIAN-CVE-2020-1934, GHSA-x5pm-xqw2-5256, UBUNTU-CVE-2020-1934.