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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:

For more information

If you have any questions or comments about this advisory:

Permalink: https://github.com/advisories/GHSA-5fg8-2547-mr8q
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: 3 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: Repository: https://github.com/xmldom/xmldom
Blast Radius: 36.6

Affected Packages

npm:@xmldom/xmldom
Dependent packages: 605
Dependent repositories: 85,555
Downloads: 30,101,842 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: 2,788
Dependent repositories: 424,390
Downloads: 6,492,077 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