CVE-2019-18213 — XML Language Server (aka lsp4xml) before 0
XML Language Server (aka lsp4xml) before 0.9.1, as used in Red Hat XML Language Support (aka vscode-xml) before 0.9.1 for Visual Studio and other products, allows XXE via a crafted XML document, with resultant SSRF (as well as SMB connection initiation that can lead to NetNTLM ch
Published
2019-10-23T21:06:46.000Z
Last modified
2024-08-05T01:47:14.103Z
01What is this vulnerability?
XML Language Server (aka lsp4xml) before 0.9.1, as used in Red Hat XML Language Support (aka vscode-xml) before 0.9.1 for Visual Studio and other products, allows XXE via a crafted XML document, with resultant SSRF (as well as SMB connection initiation that can lead to NetNTLM challenge/response capture for password cracking). This occurs in…
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2019-10-23T21:06:46.000Z
- Last modified: 2024-08-05T01:47:14.103Z
09References
- github.com — https://github.com/angelozerr/lsp4xml/
- github.com — https://github.com/redhat-developer/vscode-xml/
- marketplace.visualstudio.com — https://marketplace.visualstudio.com/items?itemName=redhat.vscode-xml
- github.com — https://github.com/angelozerr/lsp4xml/pull/566
- github.com — https://github.com/angelozerr/lsp4xml/blob/master/CHANGELOG.md#others
- www.shielder.it — https://www.shielder.it/blog/dont-open-that-xml-xxe-to-rce-in-xml-plugins-for-vs…
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