Nokogiri is an open source XML and HTML library for Ruby. Nokogiri < v1.13.4 contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to detect encoding in HTML documents. Users are advised to upgrade to Nokogiri >= 1.13.4. There are no known workarounds for this issue.
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Nokogiri | Nokogiri | * | 1.13.4 (excluding) |
| Red Hat Satellite 6.12 for RHEL 8 | RedHat | rubygem-nokogiri-0:1.13.8-1.el8sat | * |
| Red Hat Satellite 6.12 for RHEL 8 | RedHat | rubygem-nokogiri-0:1.13.8-1.el8sat | * |
| Ruby-nokogiri | Ubuntu | bionic | * |
| Ruby-nokogiri | Ubuntu | esm-apps/bionic | * |
| Ruby-nokogiri | Ubuntu | esm-apps/focal | * |
| Ruby-nokogiri | Ubuntu | esm-apps/jammy | * |
| Ruby-nokogiri | Ubuntu | esm-apps/xenial | * |
| Ruby-nokogiri | Ubuntu | esm-infra-legacy/trusty | * |
| Ruby-nokogiri | Ubuntu | focal | * |
| Ruby-nokogiri | Ubuntu | impish | * |
| Ruby-nokogiri | Ubuntu | jammy | * |
| Ruby-nokogiri | Ubuntu | kinetic | * |
| Ruby-nokogiri | Ubuntu | trusty | * |
| Ruby-nokogiri | Ubuntu | trusty/esm | * |
| Ruby-nokogiri | Ubuntu | upstream | * |
| Ruby-nokogiri | Ubuntu | xenial | * |
Attackers can create crafted inputs that
intentionally cause the regular expression to use
excessive backtracking in a way that causes the CPU
consumption to spike.