CVE-2018-17199: High severity Apache HTTP Server vulnerability

Published Jan 22, 2019
·
Updated

In Apache HTTP Server 2.4 release 2.4.37 and prior, modsession checks the session expiry time before decoding the session. This causes session expiry time to be ignored for modsessioncookie sessions since the expiry time is loaded when the session is decoded.

Other sources

In Apache HTTP Server 2.4.0 to 2.4.37, modsession checks the session expiry time before decoding the session. This causes session expiry time to be ignored for modsessioncookie sessions since the expiry time is loaded when the session is decoded.

References: https://seclists.org/oss-sec/2019/q1/81 https://httpd.apache.org/security/vulnerabilities24.html

— Red Hat

Affected Software

36 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<0:2.4.6-93.el7
0:2.4.6-93.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
debian/apache2<=2.4.25-3, <=2.4.37-1, <=2.4.25-3+deb9u6
2.4.38-12.4.25-3+deb9u7
Apache HTTP Server>=2.4.0<=2.4.37
Debian Debian Linux=8.0
Debian Debian Linux=9.0
NetApp Santricity Cloud Connector
NetApp Storage Automation Store
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
Oracle Enterprise Manager Ops Center=12.3.3
redhat/httpd<2.4.38
2.4.38
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 0:2.4.6-93.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 debian/apache2 to a version that resolves this vulnerability.

    Fixed in 2.4.38-1Fixed in 2.4.25-3+deb9u7
  25. Upgrade

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

    Fixed in 2.4.38
  26. 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
  27. Upgrade

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

    Fixed in 2.4.38
  28. Compensating control

    For Apache httpd mod_session_cookie sessions, ensure session expiry is enforced independently of mod_session expiry-time handling so expired sessions do not remain valid when expiry is ignored for cookie sessions.

Event History

Jan 22, 2019
CVE Published
12:00 AM
Data Sourced
via Red Hat·09:21 PM
DescriptionSeverityAffected Software
Jan 30, 2019
CVE Published
via MITRE·10:00 PM
Data Sourced
via MITRE·10:00 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.

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Frequently Asked Questions

1

What is CVE-2018-17199?

CVE-2018-17199 is a vulnerability in Apache HTTP Server 2.4 release 2.4.37 and prior.

2

What is the severity of CVE-2018-17199?

The severity of CVE-2018-17199 is high with a CVSS score of 7.5.

3

How does CVE-2018-17199 affect Apache HTTP Server?

CVE-2018-17199 affects Apache HTTP Server 2.4 release 2.4.37 and prior versions.

4

What is the remedy for CVE-2018-17199?

The remedy for CVE-2018-17199 is to update Apache HTTP Server to version 2.4.38 or later.

5

Where can I find more information about CVE-2018-17199?

You can find more information about CVE-2018-17199 at the following references: [1](https://seclists.org/oss-sec/2019/q1/81), [2](https://httpd.apache.org/security/vulnerabilities_24.html), [3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1668494).

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