REXML denial of service vulnerability
### Impact The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. If you need to parse untrusted XMLs with tree parser API like `REXML::Document.new`, you may be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected. ### Patches The REXML gem 3.3.6 or later include the patch to fix the vulnerability. ### Workarounds Don't parse untrusted XMLs with tree parser API. ### References * https://www.ruby-lang.org/en/news/2024/08/22/dos-rexml-cve-2024-43398/ : An announce on www.ruby-lang.org
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-43398US | — | — | ||
REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. If you… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/ruby/rexmlPACKAGE
- https://github.com/ruby/rexml/commit/7cb5eaeb221c322b9912f724183294d8ce96bae3WEB
- https://github.com/ruby/rexml/releases/tag/v3.3.6WEB
- https://github.com/ruby/rexml/security/advisories/GHSA-vmwr-mc7x-5vc3WEB
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2024-43398.ymlWEB
- https://lists.debian.org/debian-lts-announce/2025/01/msg00011.htmlWEB
- https://nvd.nist.gov/vuln/detail/CVE-2024-43398ADVISORY
- https://security.netapp.com/advisory/ntap-20250103-0006WEB
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan