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Improper Link Resolution Before File Access ('Link Following')

CVE-2002-0824

Severity Medium
Score 6.9/10

Summary

BSD pppd allows local users to change the permissions of arbitrary files via a symlink attack on a file that is specified as a tty device.

  • MEDIUM
  • LOCAL
  • NONE
  • COMPLETE
  • COMPLETE
  • COMPLETE

CWE-59 - Improper Link Resolution Before File Access

'Improper link resolution before file access' occurs when software accesses a file resource but fails to verify that the file isn't a link or shortcut to another file. An attacker can potentially gain access to arbitrary files and from there the impact can vary, depending on the application, from sensitive data exposure to remote code execution.

References

Advisory Timeline

  • Published