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Remote Code Execution in markdown-pdf

Moderate severity GitHub Reviewed Published Jul 27, 2018 to the GitHub Advisory Database • Updated Mar 1, 2023

Package

npm markdown-pdf (npm)

Affected versions

< 9.0.0

Patched versions

9.0.0

Description

Versions of markdown-pdf prior to 9.0.0 are vulnerable to Remote Code Execution. The package fails to sanitize HTML code in markdown files. If markdown files with malicious HTML are converted to PDF, the resulting PDF file will execute any JavaScript code in the original markdown file. This may allow attackers to execute Remote Code.

Recommendation

Upgrade to version 9.0.0 or later.

References

Published by the National Vulnerability Database Jul 20, 2018
Published to the GitHub Advisory Database Jul 27, 2018
Reviewed Jun 16, 2020
Last updated Mar 1, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.062%
(27th percentile)

Weaknesses

CVE ID

CVE-2018-3770

GHSA ID

GHSA-p7c9-jqhq-vr3v

Source code

No known source code
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