CVE-2019-0217 Race condition in Apache HTTP Server

What is CVE-2019-0217?

CVE-2019-0217 is a high-severity vulnerability in Apache Http Server, published on 8 Apr 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In Apache HTTP Server 2.4 release 2.4.38 and prior, a race condition in mod_auth_digest when running in a threaded server could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions.

Weakness: CWE-362

Which versions are affected by CVE-2019-0217?

It affects 14 products.

Products include Apache Http Server, Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Netapp Clustered Data Ontap, Netapp Oncommand Unified Manager and 8 more.

How do I fix CVE-2019-0217?

Upgrade to a fixed version.

Is CVE-2019-0217 being exploited?

There is no known exploitation of CVE-2019-0217 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

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-2019-0217, CLEANSTART-2026-OV84065, DEBIAN-CVE-2019-0217, GHSA-q29r-xr2f-g7j5, UBUNTU-CVE-2019-0217.