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

CVE-2013-4392

Severity Low
Score 3.3/10

Summary

systemd, when updating file permissions, allows local users to change the permissions and SELinux security contexts for arbitrary files via a symlink attack on unspecified files.

  • MEDIUM
  • LOCAL
  • NONE
  • PARTIAL
  • PARTIAL
  • NONE

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