REXML denial of service vulnerability

TRUNG BÌNH 5.9CVE-2024-43398 · GHSA-vmwr-mc7x-5vc3 · Công bố 22/08/2024 · cập nhật 17/06/2026

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
rexml RubyGems	`< 3.3.6`	`3.3.6`
rexml ruby-lang	`< 3.3.6`	`3.3.6`

Mô tả

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

Mô tả của NVD

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 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. The REXML gem 3.3.6 or later include the patch to fix the vulnerability.