CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
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.
This vulnerability has been assigned the CVE identifier CVE-2024-43398.
We strongly recommend upgrading the REXML gem.
The REXML gem 3.3.6 or later include the patch to fix the
vulnerability.
Don’t parse untrusted XMLs with tree parser API.
REXML gem 3.3.5 or prior
Thanks to l33thaxor for discovering this issue.
Originally published at 2024-08-22 03:00:00 (UTC)