USN-6905-1: Rack vulnerabilities
23 July 2024
Rack could be made to consume resources and cause long delays if it processed certain input.
Releases
Packages
- ruby-rack - modular Ruby webserver interface
Details
It was discovered that Rack incorrectly handled certain regular
expressions. A remote attacker could possibly use this issue to cause
Rack to consume resources, leading to a denial of service.
(CVE-2023-27539)
It was discovered that Rack incorrectly handled Multipart MIME parsing.
A remote attacker could possibly use this issue to cause Rack to consume
resources, leading to a denial of service. This issue only affected
Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-27530)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.04
-
ruby-rack
-
2.1.4-5ubuntu1+esm4
Available with Ubuntu Pro
Ubuntu 20.04
-
ruby-rack
-
2.0.7-2ubuntu0.1+esm4
Available with Ubuntu Pro
Ubuntu 18.04
-
ruby-rack
-
1.6.4-4ubuntu0.2+esm5
Available with Ubuntu Pro
Ubuntu 16.04
-
ruby-rack
-
1.6.4-3ubuntu0.2+esm5
Available with Ubuntu Pro
Ubuntu 14.04
-
ruby-rack
-
1.5.2-3+deb8u3ubuntu1~esm7
Available with Ubuntu Pro
After a standard system update you need to restart any applications using
Rack to make all the necessary changes.
References
Related notices
- USN-6837-1: ruby-rack
- USN-6689-1: ruby-rack