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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTVmZzgtMjU0Ny1tcjhx
Misinterpretation of malicious XML input
Impact
xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications.
Patches
Update to one of the fixed versions of @xmldom/xmldom (>=0.7.0)
See issue #271 for the status of publishing xmldom to npm or join #270 for Q&A/discussion until it's resolved.
Workarounds
Downstream applications can validate the input and reject the maliciously crafted documents.
References
Similar to this one reported on the Go standard library:
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
- https://mattermost.com/blog/securing-xml-implementations-across-the-web/
For more information
If you have any questions or comments about this advisory:
- Open an issue in
xmldom/xmldom - Email us: send an email to all addresses that are shown by
npm owner ls @xmldom/xmldom
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTVmZzgtMjU0Ny1tcjhx
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 3 years ago
Updated: 2 months ago
CVSS Score: 6.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Identifiers: GHSA-5fg8-2547-mr8q, CVE-2021-32796
References:
- https://github.com/xmldom/xmldom/security/advisories/GHSA-5fg8-2547-mr8q
- https://nvd.nist.gov/vuln/detail/CVE-2021-32796
- https://github.com/xmldom/xmldom/commit/7b4b743917a892d407356e055b296dcd6d107e8b
- https://www.npmjs.com/package/@xmldom/xmldom
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities
- https://mattermost.com/blog/securing-xml-implementations-across-the-web
- https://github.com/advisories/GHSA-5fg8-2547-mr8q
Blast Radius: 36.6
Affected Packages
npm:@xmldom/xmldom
Dependent packages: 605Dependent repositories: 85,555
Downloads: 30,200,534 last month
Affected Version Ranges: < 0.7.0
Fixed in: 0.7.0
All affected versions:
All unaffected versions: 0.7.0, 0.7.1, 0.7.2, 0.7.3, 0.7.4, 0.7.5, 0.7.6, 0.7.7, 0.7.8, 0.7.9, 0.7.10, 0.7.11, 0.7.12, 0.7.13, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 0.8.4, 0.8.5, 0.8.6, 0.8.7, 0.8.8, 0.8.9, 0.8.10
npm:xmldom
Dependent packages: 2,788Dependent repositories: 424,390
Downloads: 6,474,830 last month
Affected Version Ranges: <= 0.6.0
No known fixed version
All affected versions: 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.1.10, 0.1.11, 0.1.12, 0.1.13, 0.1.14, 0.1.15, 0.1.16, 0.1.17, 0.1.18, 0.1.19, 0.1.20, 0.1.21, 0.1.22, 0.1.24, 0.1.25, 0.1.26, 0.1.27, 0.1.29, 0.1.30, 0.1.31, 0.2.0, 0.2.1, 0.3.0, 0.4.0, 0.5.0, 0.6.0