CVE-2018-1301 Denial of service in Apache HTTP Server

What is CVE-2018-1301?

CVE-2018-1301 is a medium-severity denial of service vulnerability in Apache Http Server, published on 26 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A specially crafted request could have crashed the Apache HTTP Server prior to version 2.4.30, due to an out of bound access after a size limit is reached by reading the HTTP header. This vulnerability is considered very hard if not impossible to trigger in non-debug mode (both log and build level), so it is classified as low risk for common server usage.

Weakness: CWE-119

Which versions are affected by CVE-2018-1301?

It affects 8 products.

Products include Apache Http Server, Canonical Ubuntu Linux, Debian Debian Linux, Netapp Clustered Data Ontap, Netapp Santricity Cloud Connector, Netapp Storage Automation Store and 2 more.

How do I fix CVE-2018-1301?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-1301 being exploited?

There is no known exploitation of CVE-2018-1301 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-2018-1301, CLEANSTART-2026-IK18722, DEBIAN-CVE-2018-1301, GHSA-c68v-mcv4-56hp, UBUNTU-CVE-2018-1301.