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Command Injection in ascii-art

Low severity GitHub Reviewed Published Sep 1, 2020 to the GitHub Advisory Database • Updated Jan 9, 2023

Package

npm ascii-art (npm)

Affected versions

<= 1.4.2

Patched versions

1.4.4

Description

Versions of ascii-art before 1.4.4 are vulnerable to command injection. This is exploitable when user input is passed into the argument of the ascii-art preview command.

Example Proof of concept:
ascii-art preview 'doom"; touch /tmp/malicious; echo "'

Given that the input is passed on the command line and none of the api methods are vulnerable to this, the likely exploitation vector is when the ascii-art comment is being called programmatically using something like execFile.

Recommendation

Update to version 1.4.4 or later.

References

Reviewed Aug 31, 2020
Published to the GitHub Advisory Database Sep 1, 2020
Last updated Jan 9, 2023

Severity

Low

Weaknesses

CVE ID

No known CVE

GHSA ID

GHSA-9hqj-38j2-5jgm

Source code

No known source code
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