CVE-2023-28755 Ruby URI component ReDoS issue
Attackers can cause denial of service by sending specially crafted URLs that trigger excessive CPU usage in the Ruby URI parser.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-28755?
CVE-2023-28755 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 31 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to URI objects. The fixed versions are 0.12.1, 0.11.1, 0.10.2 and 0.10.0.1.
Weakness: CWE-1333
Which versions are affected by CVE-2023-28755?
8 open source packages ship an affected version, including uri. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
uri RubyGems | All versions | 0.10.0.1 |
uri RubyGems | All versions | 0.10.0.1 |
uri RubyGems | From 0.10.1 | 0.10.2 |
uri RubyGems | From 0.10.1 | 0.10.2 |
uri RubyGems | From 0.11.0 | 0.11.1 |
uri RubyGems | From 0.11.0 | 0.11.1 |
2 more packages
uri RubyGems | From 0.12.0 | 0.12.1 |
uri RubyGems | From 0.12.0 | 0.12.1 |
Linux distribution packages (2)
ruby3.1 openSUSE:Tumbleweed | All versions | 3.1.4-1.1 |
ruby3.2 openSUSE:Tumbleweed | All versions | 3.2.2-1.1 |
Products include Debian Debian Linux, Fedoraproject Fedora, Ruby-Lang Uri.
How do I fix CVE-2023-28755?
Upgrade uri to a fixed version for your release line: 0.10.0.1, 0.10.2, 0.11.1 or 0.12.1.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-28755 being exploited?
There is no known exploitation of CVE-2023-28755 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2023-28755, CLEANSTART-2026-KX08240, CLSA-2026-1779099998, DEBIAN-CVE-2023-28755, ECHO-97f1-838f-206b, GHSA-hv5j-3h9f-99c2 and 3 more.