CVE-2019-0217: Race Condition

Published Apr 1, 2019
·
Updated

A race condition was found in modauthdigest when the web server was running in a threaded MPM configuration. It could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions.

Other sources

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

Affected Software

49 affected componentsFixes available
redhat/jbcs-httpd24-apr<0:1.6.3-63.jbcs.el6
0:1.6.3-63.jbcs.el6
redhat/jbcs-httpd24-apr-util<0:1.6.1-48.jbcs.el6
0:1.6.1-48.jbcs.el6
redhat/jbcs-httpd24-brotli<0:1.0.6-7.jbcs.el6
0:1.0.6-7.jbcs.el6
redhat/jbcs-httpd24-curl<0:7.64.1-14.jbcs.el6
0:7.64.1-14.jbcs.el6
redhat/jbcs-httpd24-httpd<0:2.4.37-33.jbcs.el6
0:2.4.37-33.jbcs.el6
redhat/jbcs-httpd24-jansson<0:2.11-20.jbcs.el6
0:2.11-20.jbcs.el6
redhat/jbcs-httpd24-nghttp2<0:1.39.2-4.jbcs.el6
0:1.39.2-4.jbcs.el6
redhat/jbcs-httpd24-openssl<1:1.1.1-25.jbcs.el6
1:1.1.1-25.jbcs.el6
redhat/jbcs-httpd24-apr<0:1.6.3-63.jbcs.el7
0:1.6.3-63.jbcs.el7
redhat/jbcs-httpd24-apr-util<0:1.6.1-48.jbcs.el7
0:1.6.1-48.jbcs.el7
redhat/jbcs-httpd24-brotli<0:1.0.6-7.jbcs.el7
0:1.0.6-7.jbcs.el7
redhat/jbcs-httpd24-curl<0:7.64.1-14.jbcs.el7
0:7.64.1-14.jbcs.el7
redhat/jbcs-httpd24-httpd<0:2.4.37-33.jbcs.el7
0:2.4.37-33.jbcs.el7
redhat/jbcs-httpd24-jansson<0:2.11-20.jbcs.el7
0:2.11-20.jbcs.el7
redhat/jbcs-httpd24-nghttp2<0:1.39.2-4.jbcs.el7
0:1.39.2-4.jbcs.el7
redhat/jbcs-httpd24-openssl<1:1.1.1-25.jbcs.el7
1:1.1.1-25.jbcs.el7
redhat/httpd<0:2.4.6-90.el7
0:2.4.6-90.el7
redhat/httpd24<0:1.1-19.el6
0:1.1-19.el6
redhat/httpd24-httpd<0:2.4.34-15.el6
0:2.4.34-15.el6
redhat/httpd24-nghttp2<0:1.7.1-8.el6
0:1.7.1-8.el6
redhat/httpd24<0:1.1-19.el7
0:1.1-19.el7
redhat/httpd24-httpd<0:2.4.34-15.el7
0:2.4.34-15.el7
redhat/httpd24-nghttp2<0:1.7.1-8.el7
0:1.7.1-8.el7
Apache HTTP Server>=2.4.0<=2.4.38
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Fedoraproject Fedora=28
Fedoraproject Fedora=29
Fedoraproject Fedora=30
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
redhat Enterprise Linux
redhat Enterprise Linux Desktop=7.0
redhat Enterprise Linux Server=7.0
redhat Enterprise Linux Workstation=7.0
openSUSE Leap=15.0
openSUSE Leap=42.3
NetApp Oncommand Unified Manager 7-mode
NetApp Clustered Data ONTAP
Oracle Enterprise Manager Ops Center=12.3.3
Oracle Enterprise Manager Ops Center=12.4.0
Oracle HTTP Server=12.2.1.3.0
Oracle Retail Xstore Point of Service=7.0
Oracle Retail Xstore Point of Service=7.1
redhat/httpd<2.4.39
2.4.39
debian/apache2
2.4.62-1~deb11u12.4.67-1~deb11u32.4.68-1~deb12u12.4.67-1~deb12u32.4.68-1~deb13u12.4.67-1~deb13u32.4.68-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/jbcs-httpd24-apr to a version that resolves this vulnerability.

    Fixed in 0:1.6.3-63.jbcs.el6
  2. Upgrade

    Upgrade redhat/jbcs-httpd24-apr-util to a version that resolves this vulnerability.

    Fixed in 0:1.6.1-48.jbcs.el6
  3. Upgrade

    Upgrade redhat/jbcs-httpd24-brotli to a version that resolves this vulnerability.

    Fixed in 0:1.0.6-7.jbcs.el6
  4. Upgrade

    Upgrade redhat/jbcs-httpd24-curl to a version that resolves this vulnerability.

    Fixed in 0:7.64.1-14.jbcs.el6
  5. Upgrade

    Upgrade redhat/jbcs-httpd24-httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.37-33.jbcs.el6
  6. Upgrade

    Upgrade redhat/jbcs-httpd24-jansson to a version that resolves this vulnerability.

    Fixed in 0:2.11-20.jbcs.el6
  7. Upgrade

    Upgrade redhat/jbcs-httpd24-nghttp2 to a version that resolves this vulnerability.

    Fixed in 0:1.39.2-4.jbcs.el6
  8. Upgrade

    Upgrade redhat/jbcs-httpd24-openssl to a version that resolves this vulnerability.

    Fixed in 1:1.1.1-25.jbcs.el6
  9. Upgrade

    Upgrade redhat/jbcs-httpd24-apr to a version that resolves this vulnerability.

    Fixed in 0:1.6.3-63.jbcs.el7
  10. Upgrade

    Upgrade redhat/jbcs-httpd24-apr-util to a version that resolves this vulnerability.

    Fixed in 0:1.6.1-48.jbcs.el7
  11. Upgrade

    Upgrade redhat/jbcs-httpd24-brotli to a version that resolves this vulnerability.

    Fixed in 0:1.0.6-7.jbcs.el7
  12. Upgrade

    Upgrade redhat/jbcs-httpd24-curl to a version that resolves this vulnerability.

    Fixed in 0:7.64.1-14.jbcs.el7
  13. Upgrade

    Upgrade redhat/jbcs-httpd24-httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.37-33.jbcs.el7
  14. Upgrade

    Upgrade redhat/jbcs-httpd24-jansson to a version that resolves this vulnerability.

    Fixed in 0:2.11-20.jbcs.el7
  15. Upgrade

    Upgrade redhat/jbcs-httpd24-nghttp2 to a version that resolves this vulnerability.

    Fixed in 0:1.39.2-4.jbcs.el7
  16. Upgrade

    Upgrade redhat/jbcs-httpd24-openssl to a version that resolves this vulnerability.

    Fixed in 1:1.1.1-25.jbcs.el7
  17. Upgrade

    Upgrade redhat/httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.6-90.el7
  18. Upgrade

    Upgrade redhat/httpd24 to a version that resolves this vulnerability.

    Fixed in 0:1.1-19.el6
  19. Upgrade

    Upgrade redhat/httpd24-httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.34-15.el6
  20. Upgrade

    Upgrade redhat/httpd24-nghttp2 to a version that resolves this vulnerability.

    Fixed in 0:1.7.1-8.el6
  21. Upgrade

    Upgrade redhat/httpd24 to a version that resolves this vulnerability.

    Fixed in 0:1.1-19.el7
  22. Upgrade

    Upgrade redhat/httpd24-httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.34-15.el7
  23. Upgrade

    Upgrade redhat/httpd24-nghttp2 to a version that resolves this vulnerability.

    Fixed in 0:1.7.1-8.el7
  24. Upgrade

    Upgrade redhat/httpd to a version that resolves this vulnerability.

    Fixed in 2.4.39
  25. Upgrade

    Upgrade debian/apache2 to a version that resolves this vulnerability.

    Fixed in 2.4.62-1~deb11u1Fixed in 2.4.67-1~deb11u3Fixed in 2.4.68-1~deb12u1Fixed in 2.4.67-1~deb12u3Fixed in 2.4.68-1~deb13u1Fixed in 2.4.67-1~deb13u3Fixed in 2.4.68-1
  26. Upgrade

    Upgrade Apache HTTP Server (httpd) to a version that resolves this vulnerability.

    Fixed in 2.4.38
  27. Configuration

    Use the prefork MPM instead of a threaded MPM configuration to mitigate the mod_auth_digest race condition (affects threaded server configuration).

    Apache HTTP Server MPM MPM mode = prefork

Event History

Apr 1, 2019
CVE Published
12:00 AM
Apr 2, 2019
Data Sourced
via Red Hat·10:10 AM
DescriptionSeverityAffected Software
Apr 8, 2019
CVE Published
via MITRE·08:11 PM
Data Sourced
via MITRE·08:11 PM
DescriptionWeakness
Data Sourced
via NVD·09:29 PM
RemedyDescriptionSeverityWeaknessAffected Software
Sep 23, 2025
Data Sourced
via Ubuntu·04:32 AM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Launchpad·04:33 AM
Description
Jul 16, 2026
Data Sourced
via Debian·11:28 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2019-0217?

CVE-2019-0217 is classified as a high severity vulnerability due to its potential to bypass authentication controls.

2

How do I fix CVE-2019-0217?

To mitigate CVE-2019-0217, upgrade Apache HTTP Server to version 2.4.39 or later.

3

Who is affected by CVE-2019-0217?

CVE-2019-0217 affects Apache HTTP Server versions 2.4.38 and earlier when run in a threaded MPM configuration.

4

What kind of vulnerability is CVE-2019-0217?

CVE-2019-0217 is a race condition vulnerability in mod_auth_digest, enabling authentication bypass.

5

What products are related to CVE-2019-0217?

Apache HTTP Server, Red Hat products including jbcs-httpd24-apr and various utilities are related to CVE-2019-0217.

Company

Resources

Contact

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