---
title: "ExifTool CVE-2021-22204 - Arbitrary Code Execution"
url: https://daily.dev/posts/exiftool-cve-2021-22204---arbitrary-code-execution-ks5smojrq
source_url: https://devcraft.io/2021/05/04/exiftool-arbitrary-code-execution-cve-2021-22204.html
type: article
source: "Hacker News"
published: 2024-01-27T13:27:51.155Z
updated: 2024-05-09T08:58:27.770Z
tags: ["perl"]
reading_time: 16
upvotes: 0
comments: 0
language: en
---

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# ExifTool CVE-2021-22204 - Arbitrary Code Execution

**[Hacker News](https://daily.dev/sources/hn)** · 16 min read · 0 upvotes · 0 comments

## Summary

The post discusses a bug in ExifTool that allows for arbitrary code execution. The author discovered the bug while examining a bug bounty program and noticed they were using an older version of ExifTool. The bug involves the use of the 'eval' function in Perl, which can be abused to execute code. The post also mentions potential formats that can be used to trigger the bug, such as DjVu and TIFF.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://devcraft.io/2021/05/04/exiftool-arbitrary-code-execution-cve-2021-22204.html>

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---

Tags: [#perl](https://daily.dev/tags/perl)

[View this post on daily.dev](https://daily.dev/posts/exiftool-cve-2021-22204---arbitrary-code-execution-ks5smojrq)