Headline
GHSA-5866-49gr-22v4: REXML DoS vulnerability
Impact
The REXML gem before 3.3.2 has a DoS vulnerability when it parses an XML that has many entity expansions with SAX2 or pull parser API.
If you need to parse untrusted XMLs with SAX2 or pull parser API, you may be impacted to this vulnerability.
Patches
The REXML gem 3.3.3 or later include the patch to fix the vulnerability.
Workarounds
Don’t parse untrusted XMLs with SAX2 or pull parser API.
References
- https://www.ruby-lang.org/en/news/2008/08/23/dos-vulnerability-in-rexml/ : This is a similar vulnerability
- https://www.ruby-lang.org/en/news/2024/08/01/dos-rexml-cve-2024-41946/: An announce on www.ruby-lang.org
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- GitHub Advisory Database
- GitHub Reviewed
- CVE-2024-41946
REXML DoS vulnerability
Moderate severity GitHub Reviewed Published Aug 1, 2024 in ruby/rexml • Updated Aug 2, 2024
Package
Affected versions
< 3.3.3
Description
Published to the GitHub Advisory Database
Aug 2, 2024
Severity
CVSS base metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
GHSA ID
GHSA-5866-49gr-22v4
Source code
Related news
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Ubuntu Security Notice 7091-1 - It was discovered that Ruby incorrectly handled parsing of an XML document that has specific XML characters in an attribute value using REXML gem. An attacker could use this issue to cause Ruby to crash, resulting in a denial of service. This issue only affected in Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. It was discovered that Ruby incorrectly handled parsing of an XML document that has many entity expansions with SAX2 or pull parser API. An attacker could use this issue to cause Ruby to crash, resulting in a denial of service.
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