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CVE-2010-4655

Published: 25 January 2011

net/core/ethtool.c in the Linux kernel before 2.6.36 does not initialize certain data structures, which allows local users to obtain potentially sensitive information from kernel heap memory by leveraging the CAP_NET_ADMIN capability for an ethtool ioctl call.

From the Ubuntu Security Team

Kees Cook discovered that some ethtool functions did not correctly clear heap memory. A local attacker with CAP_NET_ADMIN privileges could exploit this to read portions of kernel heap memory, leading to a loss of privacy.

Priority

Low

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy
Released (2.6.24-29.90)
karmic
Released (2.6.31-22.70)
lucid
Released (2.6.32-27.49)
maverick
Released (2.6.35-25.43)
natty Not vulnerable
(2.6.38-2.29)
upstream
Released (2.6.38~rc3)
Patches:
upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=b00916b189d13a615ff05c9242201135992fcda3
Introduced by

a77f5db361ed9953b5b749353ea2c7fed2bf8d93

Fixed by b7c7d01aaed1f71d9afe815a569f0a81465a1744
linux-ec2
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic
Released (2.6.31-307.23)
lucid
Released (2.6.32-311.22)
maverick Ignored
(end of life)
natty Does not exist

upstream
Released (2.6.38~rc3)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Ignored
(end of life)
lucid
Released (2.6.31-609.26)
maverick Does not exist

natty Does not exist

upstream
Released (2.6.38~rc3)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Does not exist

lucid
Released (2.6.35-25.44~lucid1)
maverick Does not exist

natty Does not exist

upstream
Released (2.6.38~rc3)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable
(2.6.38-2.29~lucid1)
maverick Does not exist

natty Does not exist

upstream
Released (2.6.38~rc3)
linux-mvl-dove
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Ignored
(end of life)
lucid
Released (2.6.32-213.29)
maverick
Released (2.6.32-414.30)
natty Does not exist

upstream
Released (2.6.38~rc3)
linux-source-2.6.15
Launchpad, Ubuntu, Debian
dapper Ignored

hardy Does not exist

karmic Does not exist

lucid Does not exist

maverick Does not exist

natty Does not exist

upstream
Released (2.6.38~rc3)
linux-ti-omap4
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Does not exist

lucid Does not exist

maverick
Released (2.6.35-903.23)
natty Not vulnerable
(2.6.38-1201.2)
upstream
Released (2.6.38~rc3)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N