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

CVE-2018-11248

High
9.8/10

Summary

The "util/FileDownloadUtils.java" in com.liulishuo.filedownloader:library versions prior to 1.7.4 do not check an attachment's name. If an attacker places "../" in the file name, the file can be stored in an unintended directory because of Directory Traversal.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • HIGH

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.

References

Advisory Timeline

  • Published