CVE-2009-1895

2009-07-1615:30:00

CWE-16

redhat

web.nvd.nist.gov

linux

kernel

memory usage

security

cve-2009-1895

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

5.5

Confidence

High

EPSS

0.001

Percentile

26.5%

JSON

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_kernelRange≤2.6.31

linuxlinux_kernelMatch2.6.31rc1

linuxlinux_kernelMatch2.6.31rc2

Node

debiandebian_linuxMatch4.0

debiandebian_linuxMatch5.0

Node

canonicalubuntu_linuxMatch6.06lts

canonicalubuntu_linuxMatch8.04lts

canonicalubuntu_linuxMatch8.10

canonicalubuntu_linuxMatch9.04

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel2.6.31cpe:2.3:o:linux:linux_kernel:2.6.31:rc1:*:*:*:*:*:*
linuxlinux_kernel2.6.31cpe:2.3:o:linux:linux_kernel:2.6.31:rc2:*:*:*:*:*:*
debiandebian_linux4.0cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
debiandebian_linux5.0cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
canonicalubuntu_linux6.06cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:*
canonicalubuntu_linux8.04cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:lts:*:*:*
canonicalubuntu_linux8.10cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
canonicalubuntu_linux9.04cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	2.6.31	cpe:2.3:o:linux:linux_kernel:2.6.31:rc1::::::
linux	linux_kernel	2.6.31	cpe:2.3:o:linux:linux_kernel:2.6.31:rc2::::::
debian	debian_linux	4.0	cpe:2.3:o:debian:debian_linux:4.0:::::::*
debian	debian_linux	5.0	cpe:2.3:o:debian:debian_linux:5.0:::::::*
canonical	ubuntu_linux	6.06	cpe:2.3:o:canonical:ubuntu_linux:6.06::::lts:::
canonical	ubuntu_linux	8.04	cpe:2.3:o:canonical:ubuntu_linux:8.04::::lts:::
canonical	ubuntu_linux	8.10	cpe:2.3:o:canonical:ubuntu_linux:8.10:::::::*
canonical	ubuntu_linux	9.04	cpe:2.3:o:canonical:ubuntu_linux:9.04:::::::*