GitHub Advisoryadvisory · RubyGems
GHSA-vmwr-mc7x-5vc3 REXML denial of service vulnerability
HIGH
Official page ↗
- Aliases
- CVE-2024-43398
- Ecosystem
- RubyGems
- Packages
- rexml
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-776
- Reviewed
- 2024-08-22
Affected packages
• RubyGems rexml: < 3.3.6 → fixed in 3.3.6
Description
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
Related
Alias · CVE (1)
- CVE-2024-43398 REXML is an XML toolkit for Ruby. vulnerability
Weakness · CWE (1)
- CWE-776 Improper Restriction of Recursive Entity References in DTDs weakness
References
- https://github.com/ruby/rexml/security/advisories/GHSA-vmwr-mc7x-5vc3 web
- https://nvd.nist.gov/vuln/detail/CVE-2024-43398 advisory
- https://github.com/ruby/rexml/commit/7cb5eaeb221c322b9912f724183294d8ce96bae3 web
- https://github.com/ruby/rexml package
- https://github.com/ruby/rexml/releases/tag/v3.3.6 web
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2024-43398.yml web
- https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html web
- https://security.netapp.com/advisory/ntap-20250103-0006 web
- https://www.ruby-lang.org/en/news/2024/08/22/dos-rexml-cve-2024-43398 web