Linux kernel smbfs directory traversal
| kernel-smbfs-directory-traversal (26137) |  Low Risk |
Description:
Linux kernel is vulnerable to a directory traversal in smbfs. A local attacker could send a specially-crafted request containing "dot dot" sequences (..\\) to traverse directories and escape chroot restrictions for an SMB-mounted file system.
Consequences:
Obtain Information
Remedy:
Upgrade to the latest stable version of Linux Kernel (2.6.16.11 or later), available from The Linux Kernel Archives. See References.
For VMware 2.5.3:
Apply the patch for this vulnerability, as listed in the VMware Advisory esx-253-200610-patch. See References.
For Red Hat Linux 4:
Refer to RHSA-2006:0493-6 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux 3:
Refer to RHSA-2006:0710-7 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux 2.1:
Refer to RHSA-2006:0579-12 and RHSA-2006:0580-7 for patch, upgrade, or suggested workaround information. See References.
For Debian GNU/Linux:
Refer to DSA-1097-1 and DSA-1103-1 for patch, upgrade, or suggested workaround information. See References.
For VMware ESX Server 2.0.2:
Apply the patch for this vulnerability, as listed in the VMware Advisory esx-202-200610-patch. See References.
For VMware ESX Server 2.1.3:
Apply the patch for this vulnerability, as listed in the VMware Advisory esx-213-200610-patch. See References.
For VMware ESX Server 2.5.4:
Apply the patch for this vulnerability, as listed in the VMware Advisory esx-254-200610-patch. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:028 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:22:20 CST: VMSA-2006-0005 - VMware ESX Server 2.5.4 Upgrade Patch 1.
- Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:22:38 CST: VMSA-2006-0006 - VMware ESX Server 2.5.3 Upgrade Patch 4.
- Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:22:54 CST: VMSA-2006-0007 - VMware ESX Server 2.1.3 Upgrade Patch 2.
- Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:23:03 CST: VMSA-2006-0008 - VMware ESX Server 2.0.2 Upgrade Patch 2.
- The Linux Kernel Archives: ChangeLog-2.6.16.11.
- The The Linux Kernel Archives Web site: The Linux Kernel Archives.
- VMware Advisory esx-253-200610-patch: VMware ESX Server 2.5.3 Upgrade Patch 4 (for 2.5.3 Systems Only).
- VMware Web site: VMware ESX Server 2.5.4 Upgrade Patch 1 (for 2.5.4 Systems Only).
- VMware Web site: VMware ESX Server 2.0.2 Upgrade Patch 2 (for 2.0.2 Systems Only).
- VMware Web site: VMware ESX Server 2.1.3 Upgrade Patch 2 (for 2.1.3 Systems Only).
- ASA-2006-143: kernel security update (RHSA-2006-0580)
- ASA-2006-161: kernel security update (RHSA-2006-0493)
- ASA-2006-254: kernel security update (RHSA-2006-0710)
- BID-17735: Linux Kernel SMBFS CHRoot Security Restriction Bypass Vulnerability
- CVE-2006-1864: Directory traversal vulnerability in smbfs in Linux 2.6.16 and earlier allows local users to escape chroot restrictions for an SMB-mounted filesystem via ..\\ sequences, a similar vulnerability to CVE-2006-1863.
- DSA-1097: kernel-source-2.4.27 -- several vulnerabilities
- DSA-1103: kernel-source-2.6.8 -- several vulnerabilities
- MDKSA-2006:150: Updated kernel packages fix multiple vulnerabilities
- MDKSA-2006:151: Updated kernel packages fix multiple vulnerabilities
- OSVDB ID: 25067: Linux Kernel SMBFS SMB Mount Traversal chroot Restriction Bypass
- RHSA-2006-0493: kernel security update
- RHSA-2006-0579: kernel security update
- RHSA-2006-0580: kernel security update
- RHSA-2006-0710: kernel security update
- SA19869: Linux Kernel SMBFS chroot Directory Traversal Vulnerability
- SA21476: Linux Kernel Multiple Vulnerabilities
- SA21745: Avaya Products Linux Kernel Multiple Vulnerabilities
- SA22875: VMware ESX Server Multiple Vulnerabilities
- SA23064: Avaya Products Linux Kernel Multiple Vulnerabilities
- SUSE-SA:2006:028: various kernel security problems
- USN-302-1: Linux kernel vulnerabilities
- VUPEN/ADV-2006-4502: VMware ESX Server Security Update Fixes Multiple Buffer Overflow Vulnerabilities
Platforms Affected:
- Canonical Ubuntu 5.04
- Canonical Ubuntu 5.10
- Canonical Ubuntu 6.06 LTS
- Debian Debian Linux 3.1
- Linux Kernel 2.6.16 rc7
- Linux Kernel 2.6.16 rc6
- Linux Kernel 2.6.16 rc5
- Linux Kernel 2.6.16 rc4
- Linux Kernel 2.6.16 rc3
- Linux Kernel 2.6.16 rc2
- Linux Kernel 2.6.16 rc1
- Linux Kernel 2.6.16
- Linux Kernel 2.6.16.1
- Linux Kernel 2.6.16.2
- Linux Kernel 2.6.16.3
- Linux Kernel 2.6.16.4
- Linux Kernel 2.6.16.7
- Linux Kernel 2.6.16.8
- MandrakeSoft Mandrake Linux 2006 X86_64
- MandrakeSoft Mandrake Linux 2006
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Multi Network Firewall 2.0
- Novell UnitedLinux 1.0
- RedHat Enterprise Linux 2.1 ES
- RedHat Enterprise Linux 2.1 AS
- RedHat Enterprise Linux 2.1 WS
- RedHat Enterprise Linux 3 Desktop
- RedHat Enterprise Linux 3 WS
- RedHat Enterprise Linux 3 AS
- RedHat Enterprise Linux 3 ES
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 Desktop
- RedHat Linux Advanced Workstation 2.1 Itanium
- SuSE Linux Enterprise Server 8
- SuSE Linux Enterprise Server 9
- SUSE SuSE Linux 10.0
- SUSE SuSE Linux 9.1
- SUSE SuSE Linux 9.2
- SUSE SuSE Linux 9.3
- SuSE SuSE SLES 9
- VMware ESX Server 2.0.2
- VMware ESX Server 2.1.3
- VMware ESX Server 2.5.3
- VMware ESX Server 2.5.4
Reported:
Apr 24, 2006
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