A design flaw in image processing software that modifies JPEG images might not modify the original EXIF thumbnail, which could lead to an information leak of potentially sensitive visual information that had been removed from the main JPEG image.

References

• https://nvd.nist.gov/vuln/detail/CVE-2005-0406
• http://seclists.org/lists/fulldisclosure/2005/Feb/0343.html
• http://www.redteam-pentesting.de/advisories/rt-sa-2005-008.txt