CVE-2019-18213
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 extensions/contentmodel/participants/diagnostics/LSPXMLParserConfiguration.java.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.98% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-611
- Affected
- xml language server project/xml server project · eclipse/wild web developer · theia xml extension project/theia xml extension
- Source
- cve@mitre.org
References
- https://github.com/angelozerr/lsp4xml/Product
- https://github.com/angelozerr/lsp4xml/blob/master/CHANGELOG.md#othersRelease Notes, Third Party Advisory
- https://github.com/angelozerr/lsp4xml/pull/566Patch, Third Party Advisory
- https://github.com/redhat-developer/vscode-xml/Patch, Third Party Advisory
- https://marketplace.visualstudio.com/items?itemName=redhat.vscode-xmlThird Party Advisory
- https://www.shielder.it/blog/dont-open-that-xml-xxe-to-rce-in-xml-plugins-for-vs-code-eclipse-theia/Exploit, Third Party Advisory
- https://github.com/angelozerr/lsp4xml/Product
- https://github.com/angelozerr/lsp4xml/blob/master/CHANGELOG.md#othersRelease Notes, Third Party Advisory
- https://github.com/angelozerr/lsp4xml/pull/566Patch, Third Party Advisory
- https://github.com/redhat-developer/vscode-xml/Patch, Third Party Advisory
- https://marketplace.visualstudio.com/items?itemName=redhat.vscode-xmlThird Party Advisory
- https://www.shielder.it/blog/dont-open-that-xml-xxe-to-rce-in-xml-plugins-for-vs-code-eclipse-theia/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.