CVE-2009-1895

Advisory lineage Upstream: 0 Downstream: 7
Modified
Published: 16 Jul 2009, 15:00
Last modified:07 Aug 2024, 05:27

Vulnerability Summary

Overall Risk (default)
medium
29/100
CVSS Score
7.2 HIGH
v2.0 (nvd)
EPSS Score
0.06% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

16 Jul 2009, 15:00
Published
Vulnerability first disclosed
07 Aug 2024, 05:27
Last Modified
Vulnerability information updated

Description

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).

CVSS Metrics

  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.06%• Percentile: 19%

Techniques & Countermeasures

  • CWE-16•Configuration

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

Affected Systems

  • canonical•ubuntu_linux

    6.06 | 8.04 | 8.10 | 9.04

  • debian•debian_linux

    4.0 | 5.0

  • linux•linux_kernel

    ≤ 2.6.31 | 2.6.31:rc1 | 2.6.31:rc2

References (35)