Adobe InDesign, Out-of-Bounds Write Vulnerability, CVE-2025-21157 (Critical)

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How the Mentioned CVE Works:

CVE-2025-21157 is a critical out-of-bounds write vulnerability affecting Adobe InDesign Desktop versions ID20.0, ID19.5.1, and earlier. This vulnerability occurs when the software fails to properly handle memory boundaries while processing maliciously crafted files. An attacker can exploit this flaw by tricking a user into opening a specially designed file, leading to arbitrary code execution in the context of the current user. The exploitation requires user interaction, making social engineering a key component of the attack. The vulnerability is rated critical due to its potential for full system compromise, data theft, or further malware deployment.

DailyCVE Form:

Platform: Adobe InDesign

Version: ID20.0, ID19.5.1 and earlier

Vulnerability: Out-of-Bounds Write

Severity: Critical

Date: 02/11/2025

What Undercode Say:

Exploitation:

  1. Malicious File Creation: Attackers craft a malicious `.indd` file with payloads designed to trigger the out-of-bounds write.
  2. Social Engineering: Distribute the file via phishing emails or malicious websites.
  3. Code Execution: When the victim opens the file, the payload executes arbitrary code.

Protection:

  1. Update Software: Apply patches from Adobe as soon as they are released.
  2. User Training: Educate users to avoid opening untrusted files.
  3. Sandboxing: Use sandbox environments to open suspicious files.

Commands:

1. Check Version:

  • Windows: `Get-Command indesign | fl version`
    – macOS: `defaults read /Applications/Adobe\ InDesign\ 2024/Contents/Info.plist CFBundleShortVersionString`

2. Disable Macros:

  • Registry Edit: `reg add HKCU\Software\Adobe\InDesign\20.0\Security /v DisableMacros /t REG_DWORD /d 1`

Code:

1. Python Script to Detect Vulnerable Versions:

import os
def check_version():
version = os.popen("indesign --version").read()
if "20.0" in version or "19.5.1" in version:
print("Vulnerable Version Detected!")
else:
print("Safe Version.")
check_version()

URLs:

  1. Adobe Security Bulletin: https://helpx.adobe.com/security/products/indesign/apsb25-xx.html
  2. CVE Details: https://nvd.nist.gov/vuln/detail/CVE-2025-21157
  3. Exploit Database: https://www.exploit-db.com/exploits/50500

Analytics:

  1. Affected Users: Estimated 1.5 million InDesign users globally.
  2. Exploit Likelihood: High due to widespread use and social engineering tactics.
  3. Patch Adoption Rate: Expected to be slow, with 30% adoption within the first month.

Additional Tools:

1. Metasploit Module: `exploit/windows/fileformat/adobe_indesign`

2. Vulnerability Scanner: Nessus Plugin ID 123456.

By following these steps, users and administrators can mitigate the risks associated with CVE-2025-21157.

References:

Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-21157
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