A flaw was found in REXML. A remote attacker could exploit inefficient regular expression (regex) parsing when processing hex numeric character references (&#x…;) in XML documents. This could lead to a Regular Expression Denial of Service (ReDoS), impacting the availability of the affected component. This issue is the result of an incomplete fix for CVE-2024-49761.
Weakness
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Red Hat Satellite 6.16 for RHEL 8 | RedHat | puppet-agent-0:8.8.1-3.el8sat | * |
| Red Hat Satellite 6.16 for RHEL 8 | RedHat | puppet-agent-0:8.8.1-3.el8sat | * |
| Red Hat Satellite 6.16 for RHEL 9 | RedHat | puppet-agent-0:8.8.1-3.el9sat | * |
| Red Hat Satellite 6.16 for RHEL 9 | RedHat | puppet-agent-0:8.8.1-3.el9sat | * |
| Red Hat Satellite 6.17 for RHEL 9 | RedHat | puppet-agent-0:8.8.1-3.el9sat | * |
| Red Hat Satellite 6.17 for RHEL 9 | RedHat | puppet-agent-0:8.8.1-3.el9sat | * |
| Satellite Client 6 for RHEL 8 | RedHat | puppet-agent-0:7.34.0-4.el8sat | * |
| Satellite Client 6 for RHEL 9 | RedHat | puppet-agent-0:7.34.0-4.el9sat | * |
| Jruby | Ubuntu | esm-apps/xenial | * |
| Ruby2.3 | Ubuntu | esm-infra/xenial | * |
Potential Mitigations
Related Attack Patterns
References
- https://access.redhat.com/errata/RHSA-2025:17606
- https://access.redhat.com/errata/RHSA-2025:17613
- https://access.redhat.com/errata/RHSA-2025:17693
- https://access.redhat.com/security/cve/CVE-2025-10990
- https://bugzilla.redhat.com/show_bug.cgi?id=2398216
- https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f
- https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m
- https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761/