Description

Versions of the package mammoth from 0.3.25 and before 1.11.0; versions of the package mammoth from 0.3.25 and before 1.11.0; versions of the package mammoth before 1.11.0; versions of the package org.zwobble.mammoth:mammoth before 1.11.0 are vulnerable to Directory Traversal due to the lack of path or file type validation when processing a docx file containing an image with an external link (r:link attribute instead of embedded r:embed). The library resolves the URI to a file path and after reading, the content is encoded as base64 and included in the HTML output as a data URI. An attacker can read arbitrary files on the system where the conversion is performed or cause an excessive resources consumption by crafting a docx file that links to special device files such as /dev/random or /dev/zero.

Weaknesses 1

References 6

• gist.github.com https://gist.github.com/AudunWA/4d690d9ae5efdafe7cf71d9c2ee90a10
• github.com https://github.com/mwilliamson/mammoth.js/commit/c54aaeb43a7941317c1f3c119ffa92090f988820
• security.snyk.io https://security.snyk.io/vuln/SNYK-DOTNET-MAMMOTH-13561968
• security.snyk.io https://security.snyk.io/vuln/SNYK-JAVA-ORGZWOBBLEMAMMOTH-13561969
• security.snyk.io https://security.snyk.io/vuln/SNYK-JS-MAMMOTH-13554470
• security.snyk.io https://security.snyk.io/vuln/SNYK-PYTHON-MAMMOTH-13561967

Remediation