Linux kernel arch/x86_64/lib/copy_user.s destination memory information disclosure

linux-kernel-destination-info-disclosure (43558) The risk level is classified as LowLow Risk

Description:

The Linux kernel could allow a local attacker to obtain sensitive information, caused by the failure to erase destination memory locations after an exception by the arch/x86_64/lib/copy_user.s file. An attacker could exploit this vulnerability to obtain sensitive kernel information from the system.

*CVSS:

Base Score: 2.1
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: None
 
Temporal Score: 1.6
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Obtain Information

Remedy:

Upgrade to the latest version of the Linux kernel (2.6.25.10 or later), available from The Linux Kernel Archives Web site. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

  • Red Hat Bugzilla Bug 451271: CVE-2008-2729 kernel: [x86_64] The string instruction version didn't zero the output on exception..
  • The Linux Kernel Archives Web site: The Linux Kernel Archives.
  • ASA-2008-287: kernel security and bug fix update (RHSA-2008-0508)
  • BID-29942: Linux Kernel 32-bit/64bit Emulation Local Information Disclosure Vulnerability
  • BID-29943: Linux Kernel Memory Copy Exception Local Information Disclosure Vulnerability
  • CVE-2008-2729: arch/x86_64/lib/copy_user.S in the Linux kernel before 2.6.19 on some AMD64 systems does not erase destination memory locations after an exception during kernel memory copy, which allows local users to obtain sensitive information.
  • DSA-1630: linux-2.6 -- denial of service/information leak
  • MDVSA-2008:174: kernel
  • RHSA-2008-0508: Important: kernel security and bug fix update
  • RHSA-2008-0519: Important: kernel security and bug fix update
  • RHSA-2008-0585: Important: kernel security and bug fix update
  • SECTRACK ID: 1020364: Linux Kernel AMD64 Memory Copy Bug Lets Local Users View Memory Contents
  • USN-625-1: Linux kernel vulnerabilities

Platforms Affected:

  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 7.04
  • Canonical Ubuntu 7.10
  • Canonical Ubuntu 8.04 LTS
  • Debian Debian Linux 4.0
  • Linux Kernel 2.6.0 test9
  • Linux Kernel 2.6.0 test8
  • Linux Kernel 2.6.0 test7
  • Linux Kernel 2.6.0 test6
  • Linux Kernel 2.6.0 test5
  • Linux Kernel 2.6.0 test4
  • Linux Kernel 2.6.0 test3
  • Linux Kernel 2.6.0 test2
  • Linux Kernel 2.6.0 test11
  • Linux Kernel 2.6.0 test10
  • Linux Kernel 2.6.0 test1
  • Linux Kernel 2.6.0
  • Linux Kernel 2.6.1 rc3
  • Linux Kernel 2.6.1 rc2
  • Linux Kernel 2.6.1 rc1
  • Linux Kernel 2.6.1
  • Linux Kernel 2.6.10 rc1
  • Linux Kernel 2.6.10 rc2
  • Linux Kernel 2.6.10 rc3
  • Linux Kernel 2.6.10
  • Linux Kernel 2.6.11
  • Linux Kernel 2.6.11 rc2
  • Linux Kernel 2.6.11 rc3
  • Linux Kernel 2.6.11 rc4
  • Linux Kernel 2.6.11 rc1
  • Linux Kernel 2.6.11 rc5
  • Linux Kernel 2.6.11.1
  • Linux Kernel 2.6.11.10
  • Linux Kernel 2.6.11.11
  • Linux Kernel 2.6.11.12
  • Linux Kernel 2.6.11.2
  • Linux Kernel 2.6.11.3
  • Linux Kernel 2.6.11.4
  • Linux Kernel 2.6.11.5
  • Linux Kernel 2.6.11.6
  • Linux Kernel 2.6.11.7
  • Linux Kernel 2.6.11.8
  • Linux Kernel 2.6.11.9
  • Linux Kernel 2.6.12 rc3
  • Linux Kernel 2.6.12 rc4
  • Linux Kernel 2.6.12 rc5
  • Linux Kernel 2.6.12 rc6
  • Linux Kernel 2.6.12 rc2
  • Linux Kernel 2.6.12
  • Linux Kernel 2.6.12 rc1
  • Linux Kernel 2.6.12.1
  • Linux Kernel 2.6.12.12
  • Linux Kernel 2.6.12.2
  • Linux Kernel 2.6.12.22
  • Linux Kernel 2.6.12.3
  • Linux Kernel 2.6.12.4
  • Linux Kernel 2.6.12.5
  • Linux Kernel 2.6.12.6
  • Linux Kernel 2.6.13 rc7
  • Linux Kernel 2.6.13 rc6
  • Linux Kernel 2.6.13 rc5
  • Linux Kernel 2.6.13 rc4
  • Linux Kernel 2.6.13 rc3
  • Linux Kernel 2.6.13 rc2
  • Linux Kernel 2.6.13 rc1
  • Linux Kernel 2.6.13
  • Linux Kernel 2.6.13.1
  • Linux Kernel 2.6.13.2
  • Linux Kernel 2.6.13.3
  • Linux Kernel 2.6.13.4
  • Linux Kernel 2.6.13.5
  • Linux Kernel 2.6.14 rc1
  • Linux Kernel 2.6.14
  • Linux Kernel 2.6.14 rc3
  • Linux Kernel 2.6.14 rc2
  • Linux Kernel 2.6.14 rc5
  • Linux Kernel 2.6.14 rc4
  • Linux Kernel 2.6.14.1
  • Linux Kernel 2.6.14.2
  • Linux Kernel 2.6.14.3
  • Linux Kernel 2.6.14.4
  • Linux Kernel 2.6.14.5
  • Linux Kernel 2.6.14.6
  • Linux Kernel 2.6.14.7
  • Linux Kernel 2.6.15 rc1
  • Linux Kernel 2.6.15
  • Linux Kernel 2.6.15 rc2
  • Linux Kernel 2.6.15 rc7
  • Linux Kernel 2.6.15 rc3
  • Linux Kernel 2.6.15 rc4
  • Linux Kernel 2.6.15 rc5
  • Linux Kernel 2.6.15 rc6
  • Linux Kernel 2.6.15.1
  • Linux Kernel 2.6.15.11
  • Linux Kernel 2.6.15.2
  • Linux Kernel 2.6.15.3
  • Linux Kernel 2.6.15.4
  • Linux Kernel 2.6.15.5
  • Linux Kernel 2.6.15.6
  • Linux Kernel 2.6.15.7
  • Linux Kernel 2.6.16 rc7
  • Linux Kernel 2.6.16
  • Linux Kernel 2.6.16 rc3
  • Linux Kernel 2.6.16 rc6
  • Linux Kernel 2.6.16 rc5
  • Linux Kernel 2.6.16 rc4
  • Linux Kernel 2.6.16.1
  • Linux Kernel 2.6.16.10
  • Linux Kernel 2.6.16.11
  • Linux Kernel 2.6.16.12
  • Linux Kernel 2.6.16.13
  • Linux Kernel 2.6.16.14
  • Linux Kernel 2.6.16.15
  • Linux Kernel 2.6.16.16
  • Linux Kernel 2.6.16.17
  • Linux Kernel 2.6.16.18
  • Linux Kernel 2.6.16.19
  • Linux Kernel 2.6.16.2
  • Linux Kernel 2.6.16.20
  • Linux Kernel 2.6.16.21
  • Linux Kernel 2.6.16.22
  • Linux Kernel 2.6.16.23
  • Linux Kernel 2.6.16.24
  • Linux Kernel 2.6.16.25
  • Linux Kernel 2.6.16.26
  • Linux Kernel 2.6.16.27
  • Linux Kernel 2.6.16.28
  • Linux Kernel 2.6.16.29
  • Linux Kernel 2.6.16.3
  • Linux Kernel 2.6.16.30
  • Linux Kernel 2.6.16.31
  • Linux Kernel 2.6.16.32
  • Linux Kernel 2.6.16.33
  • Linux Kernel 2.6.16.34
  • Linux Kernel 2.6.16.35
  • Linux Kernel 2.6.16.36
  • Linux Kernel 2.6.16.37
  • Linux Kernel 2.6.16.38
  • Linux Kernel 2.6.16.39
  • Linux Kernel 2.6.16.4
  • Linux Kernel 2.6.16.40
  • Linux Kernel 2.6.16.41
  • Linux Kernel 2.6.16.43
  • Linux Kernel 2.6.16.44
  • Linux Kernel 2.6.16.45
  • Linux Kernel 2.6.16.46
  • Linux Kernel 2.6.16.47
  • Linux Kernel 2.6.16.48
  • Linux Kernel 2.6.16.49
  • Linux Kernel 2.6.16.5
  • Linux Kernel 2.6.16.50
  • Linux Kernel 2.6.16.51
  • Linux Kernel 2.6.16.52
  • Linux Kernel 2.6.16.53
  • Linux Kernel 2.6.16.6
  • Linux Kernel 2.6.16.7
  • Linux Kernel 2.6.16.8
  • Linux Kernel 2.6.16.9
  • Linux Kernel 2.6.17 rc4
  • Linux Kernel 2.6.17
  • Linux Kernel 2.6.17 rc1
  • Linux Kernel 2.6.17 rc6
  • Linux Kernel 2.6.17 rc5
  • Linux Kernel 2.6.17 rc3
  • Linux Kernel 2.6.17 rc2
  • Linux Kernel 2.6.17.1
  • Linux Kernel 2.6.17.10
  • Linux Kernel 2.6.17.11
  • Linux Kernel 2.6.17.12
  • Linux Kernel 2.6.17.13
  • Linux Kernel 2.6.17.14
  • Linux Kernel 2.6.17.2
  • Linux Kernel 2.6.17.3
  • Linux Kernel 2.6.17.4
  • Linux Kernel 2.6.17.5
  • Linux Kernel 2.6.17.6
  • Linux Kernel 2.6.17.7
  • Linux Kernel 2.6.17.8
  • Linux Kernel 2.6.17.9
  • Linux Kernel 2.6.18 rc5
  • Linux Kernel 2.6.18 rc2
  • Linux Kernel 2.6.18 rc1
  • Linux Kernel 2.6.18 rc3
  • Linux Kernel 2.6.18 rc4
  • Linux Kernel 2.6.18 rc6
  • Linux Kernel 2.6.18 rc7
  • Linux Kernel 2.6.18
  • Linux Kernel 2.6.18.1
  • Linux Kernel 2.6.18.10
  • Linux Kernel 2.6.18.11
  • Linux Kernel 2.6.18.12
  • Linux Kernel 2.6.18.13
  • Linux Kernel 2.6.18.14
  • Linux Kernel 2.6.18.15
  • Linux Kernel 2.6.18.16
  • Linux Kernel 2.6.18.17
  • Linux Kernel 2.6.18.18
  • Linux Kernel 2.6.18.19
  • Linux Kernel 2.6.18.2
  • Linux Kernel 2.6.18.20
  • Linux Kernel 2.6.18.21
  • Linux Kernel 2.6.18.22
  • Linux Kernel 2.6.18.23
  • Linux Kernel 2.6.18.24
  • Linux Kernel 2.6.18.25
  • Linux Kernel 2.6.18.26
  • Linux Kernel 2.6.18.27
  • Linux Kernel 2.6.18.28
  • Linux Kernel 2.6.18.29
  • Linux Kernel 2.6.18.3
  • Linux Kernel 2.6.18.30
  • Linux Kernel 2.6.18.31
  • Linux Kernel 2.6.18.32
  • Linux Kernel 2.6.18.33
  • Linux Kernel 2.6.18.34
  • Linux Kernel 2.6.18.35
  • Linux Kernel 2.6.18.36
  • Linux Kernel 2.6.18.37
  • Linux Kernel 2.6.18.38
  • Linux Kernel 2.6.18.39
  • Linux Kernel 2.6.18.4
  • Linux Kernel 2.6.18.40
  • Linux Kernel 2.6.18.41
  • Linux Kernel 2.6.18.42
  • Linux Kernel 2.6.18.43
  • Linux Kernel 2.6.18.44
  • Linux Kernel 2.6.18.45
  • Linux Kernel 2.6.18.46
  • Linux Kernel 2.6.18.47
  • Linux Kernel 2.6.18.48
  • Linux Kernel 2.6.18.49
  • Linux Kernel 2.6.18.5
  • Linux Kernel 2.6.18.50
  • Linux Kernel 2.6.18.51
  • Linux Kernel 2.6.18.52
  • Linux Kernel 2.6.18.53
  • Linux Kernel 2.6.18.6
  • Linux Kernel 2.6.18.7
  • Linux Kernel 2.6.18.8
  • Linux Kernel 2.6.18.9
  • Linux Kernel 2.6.19 rc1
  • Linux Kernel 2.6.19 rc3
  • Linux Kernel 2.6.19 rc4
  • Linux Kernel 2.6.19 rc2
  • Linux Kernel 2.6.2 rc1
  • Linux Kernel 2.6.2 rc3
  • Linux Kernel 2.6.2 rc2
  • Linux Kernel 2.6.2
  • Linux Kernel 2.6.3 rc2
  • Linux Kernel 2.6.3
  • Linux Kernel 2.6.3 rc3
  • Linux Kernel 2.6.3 rc4
  • Linux Kernel 2.6.3 rc1
  • Linux Kernel 2.6.4
  • Linux Kernel 2.6.4 rc3
  • Linux Kernel 2.6.4 rc2
  • Linux Kernel 2.6.4 rc1
  • Linux Kernel 2.6.5 rc2
  • Linux Kernel 2.6.5 rc3
  • Linux Kernel 2.6.5 rc1
  • Linux Kernel 2.6.5
  • Linux Kernel 2.6.6
  • Linux Kernel 2.6.6 rc2
  • Linux Kernel 2.6.6 rc3
  • Linux Kernel 2.6.6 rc1
  • Linux Kernel 2.6.7 rc1
  • Linux Kernel 2.6.7 rc2
  • Linux Kernel 2.6.7 rc3
  • Linux Kernel 2.6.7
  • Linux Kernel 2.6.8 rc1
  • Linux Kernel 2.6.8
  • Linux Kernel 2.6.8 rc4
  • Linux Kernel 2.6.8 rc3
  • Linux Kernel 2.6.8 rc2
  • Linux Kernel 2.6.8.1
  • Linux Kernel 2.6.9 rc1
  • Linux Kernel 2.6.9
  • Linux Kernel 2.6.9 rc4
  • Linux Kernel 2.6.9 rc3
  • Linux Kernel 2.6.9 rc2
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client
  • RedHat Linux Advanced Workstation 2.1 Itanium

Reported:

Jun 25, 2008

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

Return to the main page

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Internet Security Systems

IBM Internet Security Systems is a trusted security advisor to thousands of the world's leading businesses and governments, helping to provide pre-emptive protection for networks, desktops and servers. The IBM Proventia? integrated security platform is designed to automatically protect against both known and unknown threats, helping to keep networks up and running and shield customers from online attacks before they impact business assets. IBM Internet Security Systems products and services are based on the proactive security intelligence of its X-Force? research and development team ? an unequivocal world authority in vulnerability and threat research. The IBM Internet Security Systems product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the IBM Internet Security Systems Web site at www.iss.net or call 800-776-2362.