Improper Restriction of XML External Entity Reference ('XXE') Affecting rexml package, versions <3.3.6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUBY-REXML-7814166
- published23 Aug 2024
- disclosed22 Aug 2024
- creditl33thaxor
Introduced: 22 Aug 2024
CVE-2024-43398 (opens in a new tab)How to fix?
Upgrade rexml to version 3.3.6 or higher.
Overview
rexml is an An XML toolkit for Ruby.
Affected versions of this package are vulnerable to Improper Restriction of XML External Entity Reference ('XXE') via tree parser APIs like REXML::Document.new function. An attacker can cause the application to consume excessive resources by submitting specially crafted XML documents with many deep elements that have the same local name attributes.
Note:
This is only exploitable if a tree parser API is used to parse untrusted XMLs.