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Advisories

MuPDF mutool ANSI Injection via Metadata

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severity
low
date
Affecting

  • MuPDF < commit 0f17d78

CWE
  • CWE-150 Improper Neutralization of Escape, Meta, or Control Sequences
CVSS
4.8
CVSS V3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
References
Credit
Niel Duysters
Description
MuPDF mutool does not sanitize PDF metadata fields before writing them to terminal output, allowing attackers to inject arbitrary ANSI escape sequences through crafted PDF metadata. Attackers can embed malicious ANSI escape codes in PDF metadata that are passed unsanitized to the terminal when running mutool info, enabling them to clear the terminal display and render arbitrary text for social engineering attacks such as presenting fake prompts or spoofed commands.

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