Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 533
Alerts This Week
Warning Icon 1 533

Ubuntu 20.04 Apache2 Denial of Service Information Issues USN-8396-1

ubuntu
Calendar Grey June 12, 2026
Scroller Ubuntu Esm H88
Numerous security fixes are applied to Apache HTTP Server in various Ubuntu versions. Ensure your systems are secured.
Several security issues were fixed in Apache HTTP Server.

Summary

Several security issues were fixed in Apache HTTP Server.

Software Description:

- apache2: Apache HTTP server

Details:

It was discovered that the Apache HTTP Server mod_rewrite module

incorrectly handled certain privileges. A local attacker could possibly use

this issue to obtain sensitive information. (CVE-2026-24072)

Andrew Lacambra, Elhanan Haenel, Tianshuo Han, and Tristan Madani

discovered that the Apache HTTP Server mod_proxy_ajp module incorrectly

handled certain AJP server messages. An attacker in control of a

backend AJP server could use this issue to cause Apache HTTP Server to

crash, resulting in a denial of service, or possibly execute arbitrary

code. (CVE-2026-28780)

Pavel Kohout discovered that the Apache HTTP Server incorrectly handled

certain memory operations in mod_dav_lock. A remote attacker could possibly

use this issue to cause Apache HTTP Server to crash, resulting in a denial

of service. (CVE-2026-29169)

Elhanan Haenel discovered that Apache HTTP Server...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service software update Ubuntu information disclosure apache2

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS
  apache2                         2.4.41-4ubuntu3.23+esm4
                                  Available with Ubuntu Pro
  apache2-bin                     2.4.41-4ubuntu3.23+esm4
                                  Available with Ubuntu Pro
  apache2-dev                     2.4.41-4ubuntu3.23+esm4
                                  Available with Ubuntu Pro
  apache2-ssl-dev                 2.4.41-4ubuntu3.23+esm4
                                  Available with Ubuntu Pro
  apache2-utils                   2.4.41-4ubuntu3.23+esm4
                                  Available with Ubuntu Pro
  libapache2-mod-md               2.4.41-4ubuntu3.23+esm4
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  apache2                         2.4.29-1ubuntu4.27+esm9
                                  Available with Ubuntu Pro
  apache2-bin                     2.4.29-1ubuntu4.27+esm9
                                  Available with Ubuntu Pro
  apache2-dev                     2.4.29-1ubuntu4.27+esm9
                                  Available with Ubuntu Pro
  apache2-ssl-dev                 2.4.29-1ubuntu4.27+esm9
                                  Available with Ubuntu Pro
  apache2-utils                   2.4.29-1ubuntu4.27+esm9
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  apache2                         2.4.18-2ubuntu3.17+esm18
                                  Available with Ubuntu Pro
  apache2-bin                     2.4.18-2ubuntu3.17+esm18
                                  Available with Ubuntu Pro
  apache2-data                    2.4.18-2ubuntu3.17+esm18
                                  Available with Ubuntu Pro
  apache2-dev                     2.4.18-2ubuntu3.17+esm18
                                  Available with Ubuntu Pro
  apache2-utils                   2.4.18-2ubuntu3.17+esm18
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  apache2                         2.4.7-1ubuntu4.22+esm13
                                  Available with Ubuntu Pro
  apache2-bin                     2.4.7-1ubuntu4.22+esm13
                                  Available with Ubuntu Pro
  apache2-dev                     2.4.7-1ubuntu4.22+esm13
                                  Available with Ubuntu Pro
  apache2-utils                   2.4.7-1ubuntu4.22+esm13
                                  Available with Ubuntu Pro
  apache2.2-bin                   2.4.7-1ubuntu4.22+esm13
                                  Available with Ubuntu Pro

After a standard system update you need to restart apache2 to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8396-1

CVE-2026-24072, CVE-2026-28780, CVE-2026-29169, CVE-2026-34059

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8396-1

Topics%20covered

Topics Covered

security advisory denial of service software update Ubuntu information disclosure apache2

Package Information

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.