Linux kernel ext2 information disclosure
| kernel-ext2-information-disclosure (19866) |  Medium Risk |
Description:
Linux kernel could allow a local attacker to obtain sensitive information, caused by an information leak in the ext2 when creating new directories. A local attacker could use this vulnerability to obtain the Kernel memory.
Platforms Affected:
- Canonical, Ubuntu 4.10
- Linux, Kernel 2.6.0 test8
- Linux, Kernel 2.6.0 test6
- Linux, Kernel 2.6.0 test5
- Linux, Kernel 2.6.0 test4
- Linux, Kernel 2.6.0 test9
- 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 2.6.0 test7
- Linux, Kernel 2.6.0 test3
- 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 rc2
- Linux, Kernel 2.6.10
- Linux, Kernel 2.6.10 rc3
- Linux, Kernel 2.6.10 rc1
- Linux, Kernel 2.6.11 rc5
- 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 2.6.11.1
- 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 2.6.2 rc3
- Linux, Kernel 2.6.2 rc2
- Linux, Kernel 2.6.2 rc1
- Linux, Kernel 2.6.2
- Linux, Kernel 2.6.3 rc1
- Linux, Kernel 2.6.3
- Linux, Kernel 2.6.3 rc2
- Linux, Kernel 2.6.3 rc3
- Linux, Kernel 2.6.3 rc4
- Linux, Kernel 2.6.4 rc3
- Linux, Kernel 2.6.4
- Linux, Kernel 2.6.4 rc2
- Linux, Kernel 2.6.4 rc1
- Linux, Kernel 2.6.5 rc3
- Linux, Kernel 2.6.5 rc2
- Linux, Kernel 2.6.5 rc1
- Linux, Kernel 2.6.5
- Linux, Kernel 2.6.6
- Linux, Kernel 2.6.6 rc1
- Linux, Kernel 2.6.6 rc3
- Linux, Kernel 2.6.6 rc2
- Linux, Kernel 2.6.7 rc2
- Linux, Kernel 2.6.7 rc1
- 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 rc2
- Linux, Kernel 2.6.8 rc3
- Linux, Kernel 2.6.8 rc4
- Linux, Kernel 2.6.8.1
- Linux, Kernel 2.6.9
- Linux, Kernel 2.6.9 rc4
- Linux, Kernel 2.6.9 rc3
- Linux, Kernel 2.6.9 rc2
- Linux, Kernel 2.6.9 rc1
- MandrakeSoft, Mandrake Linux 10.0
- MandrakeSoft, Mandrake Linux 10.0 AMD64
- MandrakeSoft, Mandrake Linux 10.1 X86_64
- MandrakeSoft, Mandrake Linux 10.1
- MandrakeSoft, Mandrake Linux LE2005 X86_64
- MandrakeSoft, Mandrake Linux LE2005
- MandrakeSoft, Mandrake Linux Corporate Server 2.1 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 2.1
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Multi Network Firewall 2.0
- MandrakeSoft, Mandrake Multi Network Firewall 8.2
- Novell, Linux Desktop 9
- Novell, Open Enterprise Server
- Novell, Open Enterprise Server
- RedHat, Enterprise Linux 2.1 WS
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 3 ES
- RedHat, Enterprise Linux 3 AS
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Linux Advanced Workstation 2.1 Itanium
- SuSE, Linux Enterprise Server 8
- SuSE, SuSE Linux 8.2
- SuSE, SuSE Linux 9.0
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux 9.2
- SuSE, SuSE Linux 9.3
- SuSE, SuSE Linux Desktop 1.0
- SuSE, SuSE SLES 9
Remedy:
Upgrade to the latest version of Linux Kernel (2.6.11.6 or later), available from The Linux Kernel Archives Web page. See References.
For SUSE Linux:
Upgrade to the latest Kernel listed below. Refer to SUSE Security Announcement SUSE-SA:2005:029 for more information. See References.
x86 and x86-64 Platforms:
SUSE Linux 9.3: 2.6.11.4-21.7 or later
SUSE Linux 9.2: 2.6.8-24.16 or later
SUSE Linux 9.1: 2.6.5-7.155.29 or later
SUSE Linux 9.0: 2.4.21-291 or later
SUSE Linux 8.2: 2.4.20-136 or later (x86 platform only)
For Red Hat Linux:
Refer to RHSA-2005:366-21, RHSA-2005:663-19, RHSA-2006:0190-5, or RHSA-2006:0191-9 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux:
Refer to USN-103-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Obtain Information
References:
- CIAC INFORMATION BULLETIN P-188, Security Vulnerabilities Addressed in Red Hat Kernel Update at http://www.ciac.org/ciac/bulletins/p-188.shtml.
- The Linux Kernel Archives Web site, The Linux Kernel Archives at http://kernel.org/.
- The Linux Kernel Archives Web site, ChangeLog-2.6.11.6 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.11.6.
- BID-12932: Linux Kernel EXT2 File System Information Leak Vulnerability
- CVE-2005-0400: The ext2_make_empty function call in the Linux kernel before 2.6.11.6 does not properly initialize memory when creating a block for a new directory entry, which allows local users to obtain potentially sensitive information by reading the block.
- MDKSA-2005:110: Updated 2.6 kernel packages fix multiple vulnerabilities
- MDKSA-2005:111: Updated 2.4 kernel packages fix multiple vulnerabilities
- RHSA-2005-366: kernel security update
- RHSA-2005-663: Updated kernel packages available for Red Hat Enterprise Linux 3 Update 6
- RHSA-2006-0190: kernel security update
- RHSA-2006-0191: kernel security update
- SA14713: Linux Kernel Multiple Vulnerabilities
- SUSE-SA:2005:029: kernel: several security problems
- USN-103-1: Linux kernel vulnerabilities
Reported:
Mar 29, 2005
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