USN-6885-3: Apache HTTP Server vulnerabilities
18 September 2024
Several security issues were fixed in Apache HTTP Server.
Releases
Packages
- apache2 - Apache HTTP server
Details
USN-6885-1 fixed several vulnerabilities in Apache. This update provides
the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Orange Tsai discovered that the Apache HTTP Server mod_rewrite module
incorrectly handled certain substitutions. A remote attacker could
possibly use this issue to execute scripts in directories not directly
reachable by any URL, or cause a denial of service. Some environments
may require using the new UnsafeAllow3F flag to handle unsafe
substitutions. (CVE-2024-38474, CVE-2024-38475)
Orange Tsai discovered that the Apache HTTP Server incorrectly handled
certain response headers. A remote attacker could possibly use this issue
to obtain sensitive information, execute local scripts, or perform SSRF
attacks. (CVE-2024-38476)
Orange Tsai discovered that the Apache HTTP Server mod_proxy module
incorrectly handled certain requests. A remote attacker could possibly use
this issue to cause the server to crash, resulting in a denial of service.
(CVE-2024-38477)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04
-
apache2
-
2.4.29-1ubuntu4.27+esm3
Available with Ubuntu Pro
Ubuntu 16.04
-
apache2
-
2.4.18-2ubuntu3.17+esm13
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.