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Configuration

CVE-2009-1895

High
7.2/10

Summary

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).

  • LOW
  • LOCAL
  • NONE
  • COMPLETE
  • COMPLETE
  • COMPLETE

CWE-16 - Configuration

Weaknesses in this category are typically introduced during the configuration of the software.

References

Advisory Timeline

  • Published