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nvd[email protected]NVD:CVE-2009-1895
HistoryJul 16, 2009 - 3:30 p.m.

CVE-2009-1895

2009-07-1615:30:00
CWE-16
web.nvd.nist.gov
1

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

AI Score

4.9

Confidence

High

EPSS

0.001

Percentile

26.5%

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).

Affected configurations

NVD
Node
linuxlinux_kernelRange2.6.31
OR
linuxlinux_kernelMatch2.6.31rc1
OR
linuxlinux_kernelMatch2.6.31rc2
Node
debiandebian_linuxMatch4.0
OR
debiandebian_linuxMatch5.0
Node
canonicalubuntu_linuxMatch6.06lts
OR
canonicalubuntu_linuxMatch8.04lts
OR
canonicalubuntu_linuxMatch8.10
OR
canonicalubuntu_linuxMatch9.04

References

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

AI Score

4.9

Confidence

High

EPSS

0.001

Percentile

26.5%