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


Severity Medium
Score 6.7/10


An issue was discovered in open-vm-tools 2009.03.18-154848. Local users can gain privileges via a symlink attack on /tmp files if vmware-user-suid-wrapper is setuid root and the ChmodChownDirectory function is enabled.

  • LOW
  • HIGH
  • NONE
  • HIGH
  • HIGH
  • HIGH

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.


Advisory Timeline

  • Published