CVE-2019-0196: Use After Free

Published Apr 1, 2019
·
Updated

A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request incorrectly.

Other sources

Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparision when determining the method of a request and thus process the request incorrectly.

— Red Hat

Affected Software

31 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-curl<0:7.64.1-36.jbcs.el6
0:7.64.1-36.jbcs.el6
redhat/jbcs-httpd24-httpd<0:2.4.37-57.jbcs.el6
0:2.4.37-57.jbcs.el6
redhat/jbcs-httpd24-nghttp2<0:1.39.2-25.jbcs.el6
0:1.39.2-25.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/jbcs-httpd24-curl<0:7.64.1-36.jbcs.el7
0:7.64.1-36.jbcs.el7
redhat/jbcs-httpd24-httpd<0:2.4.37-57.jbcs.el7
0:2.4.37-57.jbcs.el7
redhat/jbcs-httpd24-nghttp2<0:1.39.2-25.jbcs.el7
0:1.39.2-25.jbcs.el7
redhat/jbcs-httpd24-openssl-pkcs11<0:0.4.10-7.jbcs.el7
0:0.4.10-7.jbcs.el7
Apache HTTP Server>=2.4.17<=2.4.38
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
Debian Debian Linux=9.0
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-curl to a version that resolves this vulnerability.

    Fixed in 0:7.64.1-36.jbcs.el6
  10. Upgrade

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

    Fixed in 0:2.4.37-57.jbcs.el6
  11. Upgrade

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

    Fixed in 0:1.39.2-25.jbcs.el6
  12. Upgrade

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    Fixed in 0:7.64.1-36.jbcs.el7
  21. Upgrade

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

    Fixed in 0:2.4.37-57.jbcs.el7
  22. Upgrade

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

    Fixed in 0:1.39.2-25.jbcs.el7
  23. Upgrade

    Upgrade redhat/jbcs-httpd24-openssl-pkcs11 to a version that resolves this vulnerability.

    Fixed in 0:0.4.10-7.jbcs.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

Event History

Apr 1, 2019
CVE Published
12:00 AM
Apr 2, 2019
Data Sourced
via Red Hat·10:51 AM
DescriptionSeverityAffected Software
Jun 11, 2019
CVE Published
via MITRE·09:02 PM
Data Sourced
via MITRE·09:02 PM
DescriptionWeakness
Data Sourced
via NVD·10:29 PM
RemedyDescriptionSeverityWeaknessAffected Software
Aug 26, 2025
Data Sourced
via Ubuntu·04:29 AM
RemedyDescriptionSeverityAffected Software
Sep 23, 2025
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 vulnerability ID of this Apache HTTP Server vulnerability?

The vulnerability ID of this Apache HTTP Server vulnerability is CVE-2019-0196.

2

What is the severity level of CVE-2019-0196?

The severity level of CVE-2019-0196 is medium.

3

How does CVE-2019-0196 affect Apache HTTP Server?

CVE-2019-0196 affects Apache HTTP Server versions 2.4.17 to 2.4.38.

4

How can the Apache HTTP Server vulnerability be fixed?

To fix the Apache HTTP Server vulnerability, upgrade to version 2.4.39 or apply the necessary patches provided by your operating system vendor.

5

Where can I find more information about CVE-2019-0196?

You can find more information about CVE-2019-0196 on the official Apache HTTP Server website and the reference links provided.

Company

Resources

Contact

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