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Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')


Severity High
Score 7.5/10


thumbsup.php in Thumbs-Up 1.12, as used in LightNEasy "no database" (aka flat) and SQLite 1.2.2 and earlier, allows remote attackers to copy, rename, and read arbitrary files via directory traversal sequences in the image parameter with a modified cache_dir parameter containing a %00 (encoded null byte).

  • LOW
  • NONE

CWE-22 - Path Traversal

Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.


Advisory Timeline

  • Published