Linux kernel core dump information disclosure

linux-kernel-core-dump-information-disclosure (38841)

Low Risk

Description:

Linux kernel could allow a local attacker to obtain sensitive information, caused by a root process creating a core dump in the same location as the UID of a core dump file owned by a non-root user. A local attacker could exploit this vulnerability to obtain sensitive information.

Platforms Affected:

• Canonical, Ubuntu 6.06 LTS
• Canonical, Ubuntu 6.10
• Canonical, Ubuntu 7.04
• Canonical, Ubuntu 7.10
• Debian, Debian Linux 3.1
• Debian, Debian Linux 4.0
• Linux, Kernel 2.4.0
• Linux, Kernel 2.4.0 test6
• Linux, Kernel 2.4.0 test5
• Linux, Kernel 2.4.0 test4
• Linux, Kernel 2.4.0 test3
• Linux, Kernel 2.4.0 test2
• Linux, Kernel 2.4.0 test12
• Linux, Kernel 2.4.0 test11
• Linux, Kernel 2.4.0 test9
• Linux, Kernel 2.4.0 test8
• Linux, Kernel 2.4.0 test7
• Linux, Kernel 2.4.0 test1
• Linux, Kernel 2.4.0 test10
• Linux, Kernel 2.4.1
• Linux, Kernel 2.4.10
• Linux, Kernel 2.4.11
• Linux, Kernel 2.4.11 pre3
• Linux, Kernel 2.4.12
• Linux, Kernel 2.4.13
• Linux, Kernel 2.4.14
• Linux, Kernel 2.4.15
• Linux, Kernel 2.4.16
• Linux, Kernel 2.4.17
• Linux, Kernel 2.4.18 pre6
• Linux, Kernel 2.4.18
• Linux, Kernel 2.4.18 pre8
• Linux, Kernel 2.4.18 pre9
• Linux, Kernel 2.4.18 pre4
• Linux, Kernel 2.4.18 pre1
• Linux, Kernel 2.4.18 pre2
• Linux, Kernel 2.4.18 pre3
• Linux, Kernel 2.4.18 pre5
• Linux, Kernel 2.4.18 pre7
• Linux, Kernel 2.4.19 pre5
• Linux, Kernel 2.4.19 pre6
• Linux, Kernel 2.4.19 pre4
• Linux, Kernel 2.4.19 pre2
• Linux, Kernel 2.4.19 pre3
• Linux, Kernel 2.4.19 pre1
• Linux, Kernel 2.4.19
• Linux, Kernel 2.4.2
• Linux, Kernel 2.4.20
• Linux, Kernel 2.4.21 pre1
• Linux, Kernel 2.4.21 pre4
• Linux, Kernel 2.4.21 pre7
• Linux, Kernel 2.4.21
• Linux, Kernel 2.4.22
• Linux, Kernel 2.4.22 pre10
• Linux, Kernel 2.4.23 pre9
• Linux, Kernel 2.4.23 ow2
• Linux, Kernel 2.4.23
• Linux, Kernel 2.4.24 ow1
• Linux, Kernel 2.4.24
• Linux, Kernel 2.4.25
• Linux, Kernel 2.4.26
• Linux, Kernel 2.4.27 pre1
• Linux, Kernel 2.4.27 pre2
• Linux, Kernel 2.4.27 pre3
• Linux, Kernel 2.4.27 pre4
• Linux, Kernel 2.4.27 pre5
• Linux, Kernel 2.4.27
• Linux, Kernel 2.4.28
• Linux, Kernel 2.4.29 rc2
• Linux, Kernel 2.4.29
• Linux, Kernel 2.4.29 rc1
• Linux, Kernel 2.4.3
• Linux, Kernel 2.4.3 pre3
• Linux, Kernel 2.4.30 rc2
• Linux, Kernel 2.4.30 rc3
• Linux, Kernel 2.4.30
• Linux, Kernel 2.4.31
• Linux, Kernel 2.4.31 pre1
• Linux, Kernel 2.4.32 pre2
• Linux, Kernel 2.4.32
• Linux, Kernel 2.4.32 pre1
• Linux, Kernel 2.4.33
• Linux, Kernel 2.4.33 pre1
• Linux, Kernel 2.4.33.2
• Linux, Kernel 2.4.33.3
• Linux, Kernel 2.4.33.4
• Linux, Kernel 2.4.33.5
• Linux, Kernel 2.4.34 rc3
• Linux, Kernel 2.4.34
• Linux, Kernel 2.4.34.1
• Linux, Kernel 2.4.34.2
• Linux, Kernel 2.4.35
• Linux, Kernel 2.4.35.2
• Linux, Kernel 2.4.4
• Linux, Kernel 2.4.5
• Linux, Kernel 2.4.6
• Linux, Kernel 2.4.7
• Linux, Kernel 2.4.8
• Linux, Kernel 2.4.9 pre5
• Linux, Kernel 2.4.9
• Linux, Kernel 2.6.0 test9
• Linux, Kernel 2.6.0
• Linux, Kernel 2.6.0 test9-cvs
• Linux, Kernel 2.6.0 test8
• Linux, Kernel 2.6.0 test7
• Linux, Kernel 2.6.0 test6
• Linux, Kernel 2.6.0 test1
• 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 test5
• Linux, Kernel 2.6.1 rc1
• Linux, Kernel 2.6.1 rc2
• Linux, Kernel 2.6.1 rc3
• Linux, Kernel 2.6.1
• Linux, Kernel 2.6.10 rc3
• Linux, Kernel 2.6.10 rc2
• Linux, Kernel 2.6.10 rc1
• Linux, Kernel 2.6.10
• Linux, Kernel 2.6.11
• Linux, Kernel 2.6.11 rc1-bk6
• Linux, Kernel 2.6.11 rc1
• Linux, Kernel 2.6.11 rc4
• Linux, Kernel 2.6.11 rc3
• Linux, Kernel 2.6.11 rc2
• 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
• Linux, Kernel 2.6.12 rc5
• Linux, Kernel 2.6.12 rc6
• Linux, Kernel 2.6.12 rc4
• Linux, Kernel 2.6.12 rc3
• Linux, Kernel 2.6.12 rc1
• Linux, Kernel 2.6.12 rc2
• 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 rc6
• Linux, Kernel 2.6.13 rc5
• Linux, Kernel 2.6.13 rc4
• Linux, Kernel 2.6.13 rc3
• Linux, Kernel 2.6.13
• Linux, Kernel 2.6.13 rc1
• Linux, Kernel 2.6.13 rc7
• Linux, Kernel 2.6.13 rc2
• 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
• Linux, Kernel 2.6.14 rc2
• Linux, Kernel 2.6.14 rc5
• Linux, Kernel 2.6.14 rc4
• Linux, Kernel 2.6.14 rc3
• Linux, Kernel 2.6.14 rc1
• 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
• Linux, Kernel 2.6.15 rc1
• 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 rc7
• Linux, Kernel 2.6.15 rc2
• 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 rc5
• Linux, Kernel 2.6.16 rc1
• Linux, Kernel 2.6.16 rc2
• Linux, Kernel 2.6.16
• Linux, Kernel 2.6.16 rc7
• Linux, Kernel 2.6.16 rc6
• Linux, Kernel 2.6.16 rc4
• Linux, Kernel 2.6.16 rc3
• 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 rc1
• Linux, Kernel 2.6.17
• Linux, Kernel 2.6.17 rc6
• Linux, Kernel 2.6.17 rc5
• Linux, Kernel 2.6.17 rc4
• 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
• Linux, Kernel 2.6.18 rc5
• Linux, Kernel 2.6.18 rc2
• Linux, Kernel 2.6.18 rc1
• Linux, Kernel 2.6.18 rc7
• Linux, Kernel 2.6.18 rc3
• Linux, Kernel 2.6.18 rc4
• Linux, Kernel 2.6.18 rc6
• Linux, Kernel 2.6.18 8.1.8.El5
• Linux, Kernel 2.6.18.1
• Linux, Kernel 2.6.18.2
• Linux, Kernel 2.6.18.3
• Linux, Kernel 2.6.18.4
• Linux, Kernel 2.6.18.5
• Linux, Kernel 2.6.18.6
• Linux, Kernel 2.6.19 rc3
• Linux, Kernel 2.6.19 rc2
• Linux, Kernel 2.6.19 rc1
• Linux, Kernel 2.6.19 rc4
• Linux, Kernel 2.6.19
• Linux, Kernel 2.6.19.1
• Linux, Kernel 2.6.19.2
• Linux, Kernel 2.6.19.3
• Linux, Kernel 2.6.2
• Linux, Kernel 2.6.2 rc3
• Linux, Kernel 2.6.2 rc2
• Linux, Kernel 2.6.2 rc1
• Linux, Kernel 2.6.20 rc2
• Linux, Kernel 2.6.20
• Linux, Kernel 2.6.20.1
• Linux, Kernel 2.6.20.10
• Linux, Kernel 2.6.20.11
• Linux, Kernel 2.6.20.12
• Linux, Kernel 2.6.20.13
• Linux, Kernel 2.6.20.14
• Linux, Kernel 2.6.20.15
• Linux, Kernel 2.6.20.2
• Linux, Kernel 2.6.20.3
• Linux, Kernel 2.6.20.4
• Linux, Kernel 2.6.20.5
• Linux, Kernel 2.6.20.6
• Linux, Kernel 2.6.20.7
• Linux, Kernel 2.6.20.8
• Linux, Kernel 2.6.20.9
• Linux, Kernel 2.6.21 git7
• Linux, Kernel 2.6.21 git6
• Linux, Kernel 2.6.21 git5
• Linux, Kernel 2.6.21 git4
• Linux, Kernel 2.6.21 git3
• Linux, Kernel 2.6.21 git2
• Linux, Kernel 2.6.21 git1
• Linux, Kernel 2.6.21 rc7
• Linux, Kernel 2.6.21 rc5
• Linux, Kernel 2.6.21 rc6
• Linux, Kernel 2.6.21
• Linux, Kernel 2.6.21 rc4
• Linux, Kernel 2.6.21 rc3
• Linux, Kernel 2.6.21.1
• Linux, Kernel 2.6.21.2
• Linux, Kernel 2.6.21.3
• Linux, Kernel 2.6.21.4
• Linux, Kernel 2.6.22 rc6
• Linux, Kernel 2.6.22
• Linux, Kernel 2.6.22.1
• Linux, Kernel 2.6.22.3
• Linux, Kernel 2.6.22.4
• Linux, Kernel 2.6.22.5
• Linux, Kernel 2.6.22.6
• Linux, Kernel 2.6.22.7
• Linux, Kernel 2.6.23 rc2
• Linux, Kernel 2.6.23 rc1
• Linux, Kernel 2.6.23
• Linux, Kernel 2.6.23.7
• Linux, Kernel 2.6.24 rc2
• Linux, Kernel 2.6.24 rc3
• MandrakeSoft, Mandrake Linux 2007.1
• MandrakeSoft, Mandrake Linux 2007.1 X86_64
• MandrakeSoft, Mandrake Linux 2008.0
• MandrakeSoft, Mandrake Linux 2008.0 X86_64
• MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
• MandrakeSoft, Mandrake Linux Corporate Server 4.0
• Novell, Linux Desktop 9
• Novell, OpenSUSE 10.2
• Novell, OpenSUSE 10.3
• Novell, SLE SDK 10 SP1
• Novell, SUSE Linux Enterprise 10 SP1 DEBUGINFO
• Novell, SUSE Linux Enterprise Desktop 10 SP1
• Novell, SUSE Linux Enterprise Server 10 SP1
• RedHat, Enterprise Linux 3 WS
• RedHat, Enterprise Linux 3 ES
• RedHat, Enterprise Linux 3 AS
• RedHat, Enterprise Linux 3 Desktop
• RedHat, Enterprise Linux 4 AS
• RedHat, Enterprise Linux 4 WS
• RedHat, Enterprise Linux 4 Desktop
• RedHat, Enterprise Linux 4 ES
• RedHat, Enterprise Linux 5
• RedHat, Enterprise Linux 5 Client
• SuSE, SuSE Linux 10.1
• SuSE, SuSE Linux Enterprise Realtime 10 SP1
• SuSE, SuSE Linux Enterprise Server 8.0
• Turbolinux, Turbolinux 11 Server
• Turbolinux, Turbolinux 11 Server x64 Ed
• VMware, ESX Server 3.0.1
• VMware, ESX Server 3.0.2
• VMware, ESX Server 3.5

Remedy:

Refer to Kernel Bug Tracker Bug 3043 for patch, upgrade, or suggested workaround information. See References.

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

Consequences:

Obtain Information

References:

• Kernel Bug Tracker Bug 3043, issue with core dump owner at http://bugzilla.kernel.org/show_bug.cgi?id=3043.
• VMware Security-Announce Mailing List, Mon Jul 28 18:11:35 PDT 2008, VMSA-2008-00011 Updated ESX service console packages for Samba and vmnix at http://lists.vmware.com/pipermail/security-announce/2008/000023.html.
• ASA-2008-102: kernel security and bug fix update (RHSA-2008-0055)
• ASA-2008-203: kernel security and bug fix update (RHSA-2008-0211)
• BID-26701: Linux Kernel DO_COREDUMP Local Information Disclosure Vulnerability
• CVE-2007-6206: The do_coredump function in fs/exec.c in Linux kernel 2.4.x and 2.6.x up to 2.6.24-rc3, and possibly other versions, does not change the UID of a core dump file if it exists before a root process creates a core dump in the same location, which might allow local users to obtain sensitive information.
• DSA-1436: linux-2.6 -- several vulnerabilities
• DSA-1503: kernel-source-2.4.27 -- several vulnerabilities
• DSA-1504: kernel-source-2.6.8 -- several vulnerabilities
• FrSIRT/ADV-2007-4090: Linux Kernel do_coredump() Local Information Disclosure Vulnerability
• FrSIRT/ADV-2008-2222: VMware ESX Server Security Update Fixes Multiple Vulnerabilities
• MDVSA-2008:044: Updated kernel packages fix multiple vulnerabilities and bugs
• MDVSA-2008:086: Updated kernel packages fix vulnerability
• MDVSA-2008:112: Updated kernel packages fix security issues
• RHSA-2008-0055: Important: kernel security and bug fix update
• RHSA-2008-0089: Important: kernel security and bug fix update
• RHSA-2008-0211: Important: kernel security and bug fix update
• SA27908: Linux Kernel "do_coredump()" Information Disclosure
• SA31246: VMware ESX Server update for Samba and vmnix
• SUSE-SA:2008:007: Linux Kernel Security Problem
• SUSE-SA:2008:030: Linux kernel security update
• SUSE-SA:2008:032: SUSE Linux Enterprise 10 SP1 Linux kernel

Reported:

Nov 29, 2007

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