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| Threat Type: | CWE-264: Permissions, Privileges, and Access Control |
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| IntelliShield ID: | 21389 |
| Version: | 14 |
| First Published: | 2010 September 17 14:30 GMT |
| Last Published: | 2012 December 21 19:50 GMT |
| Vector: | Local |
| Authentication: | Single |
| Exploit: | Proof-of-Concept |
| Port: |
Not Available
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| CVE: | CVE-2010-3081 |
| BugTraq ID: | 43239 |
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| Urgency: |
Possible Use
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| Credibility: |
Confirmed
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| Severity: |
Moderate Damage
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| CVSS Base: | 6.8 |
CVSS Calculator
CVSS Version 2
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| CVSS Temporal: | 5.3 |
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| Version Summary: | MontaVista has released a security alert and updated software to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability. |
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| Description |
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Linux Kernel versions 2.6.35.4 and prior contains a vulnerability that could allow a local attacker to gain elevated privileges on the system.
The vulnerability is in the 32-bit compatibility layer for 64-bit systems due to improper validation of data returned from usermode memory. A local attacker could exploit this vulnerability to gain elevated privileges and execute arbitrary code with kernel-level privileges. A successful exploit could lead to a complete system compromise.
Proof-of-concept code that exploits this vulnerability is publicly available.
Kernel.org has confirmed this vulnerability and released updated software. |
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| Warning Indicators |
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| Linux Kernel versions 2.6.35.4 and prior are vulnerable. |
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| IntelliShield Analysis |
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An attacker would need to have local access to the affected system. In addition, the system should be running a 64-bit operating system. These prerequisites could reduce the likelihood of a successful exploit.
Reports indicate that this vulnerability is being exploited in the wild. |
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 Vendor Announcements |
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Kernel.org has released a changelog at the following link: Kernel 2.6.35.5 - Tue Sep 7 16:16:18 2010 -0700
MontaVista Software has released a security alert for registered users on December 20, 2012, at the following link: MontaVista Security Fixes
Red Hat has released security advisories at the following links: RHSA-2010:0704, RHSA-2010:0705, RHSA-2010:0711, RHSA-2010:0718, RHSA-2010:0719, RHSA-2010:0758, RHSA-2010:0842, and RHSA-2010:0882
VMware has released security advisories at the following links: VMSA-2010-0017 and VMSA-2011-0003 |
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| Impact |
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| A local attacker could exploit this vulnerability to execute arbitrary code with kernel-level privileges. A successful exploit could result in the complete compromise of affected systems. |
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| Technical Information |
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The vulnerability is due to improper boundary checks on data processed by the compat_alloc_user_space() function, which is located in the net/compat.c source file. Because the function does not check data that is returned from usermode applications, the processing of malicious data while translating 32-bit system call inputs to 64-bit system calls could trigger a memory error.
A local attacker could exploit this vulnerability by invoking the compat_alloc_user_space() function via functions such as the compat_mc_getsockopt() function or the video4linux IOCTL. While processing such calls, the vulnerable 64-bit Linux Kernel could improperly allocate memory space, possibly leading to memory corruption. The attacker could use this corrupt memory condition to execute arbitrary code with kernel-level privileges. |
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| Safeguards |
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Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have local access to affected systems.
Administrators are advised to implement physical security for production servers.
Administrators are advised to monitor affected systems. |
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| Patches/Software |
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Kernel.org has released updated versions at the following link: Kernel 2.6.35.5 or later
CentOS packages can be updated using the up2date or yum command.
Red Hat packages can be updated using the up2date or yum command.
MontaVista Software has released updated software at the following links:
Pro 4.0.1
CGE 4.0.1
CGE 5.1
MVL 6
Mobilinux 5.0
Mobilinux 4.1
VMware has released updated software at the following links:
ESX 4.1
ESX410-201011402-SG
ESX410-201101201-SG
ESX 4.0
ESX400-201101401-SG
ESX400-201103401-SG
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| Alert History |
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Version 13, March 9, 2011, 8:48 PM: Kernel.org has released a changelog and updated software to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability. VMware has also re-released an additional security advisory and updated software to address this vulnerability
Version 12, February 11, 2011, 1:02 PM: VMware has released an additional security advisory and updated software to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 11, January 5, 2011, 10:27 AM: VMware has re-released a security advisory and updated software to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 10, December 10, 2010, 8:11 AM: VMware has released a security advisory and updated software to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 9, November 15, 2010, 9:45 AM: Red Hat has released an additional security advisory and updated packages to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 8, November 11, 2010, 11:23 AM: Red Hat has released an additional security advisory and updated packages to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 7, October 11, 2010, 7:43 AM: Red Hat has released a security advisory and updated packages to address the Linux Kernel wireless extensions IOCTL information disclosure vulnerability.
Version 6, September 30, 2010, 1:53 PM: CentOS has released additional updated packages to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 5, September 29, 2010, 8:16 AM: Red Hat has released an additional security advisory and updated packages to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 4, September 23, 2010, 8:33 AM: Red Hat has released an additional security advisory and updated packages to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 3, September 22, 2010, 9:28 AM: CentOS has released updated packages to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 2, September 21, 2010, 11:01 AM: Red Hat has released security advisories and updated packages to address the Linux Kernel video4linux and compat_mc_getsockopt() privilege escalation vulnerability.
Version 1, September 17, 2010, 10:30 AM: The Linux Kernel contains a vulnerability that could allow a local attacker to gain elevated privileges on the system. Updates are not available. |
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Product Sets |
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The security vulnerability applies to the following combinations of products.
| Primary Products: |
| Linus Torvalds | Linux Kernel | 2.6.0 .0 | 2.6.1 .0 | 2.6.10 .0 | 2.6.11 .0, .1, .10, .11, .12, .2, .3, .4, .5, .6, .7, .8, .9 | 2.6.12 .0, .1, .2, .3, .4, .5, .6 | 2.6.13 .0, .1, .2, .3, .4, .5 | 2.6.14 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.15 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.16 .0, .1, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .2, .20, .21, .22, .23, .24, .25, .26, .27, .28, .29, .3, .30, .31, .32, .33, .34, .35, .36, .37, .38, .39, .4, .40, .41, .42, .43, .44, .45, .46, .47, .48, .49, .5, .50, .51, .52, .53, .54, .55, .56, .57, .58, .59, .6, .60, .61, .62, .7, .8, .9 | 2.6.17 .0, .1, .10, .11, .12, .13, .14, .2, .3, .4, .5, .6, .7, .8, .9 | 2.6.18 .0, .1, .2, .3, .4, .5, .6, .7, .8 | 2.6.19 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.2 .0 | 2.6.20 .0, .1, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .2, .20, .21, .3, .4, .5, .6, .7, .8, .9 | 2.6.21 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.22 .0, .1, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .2, .3, .4, .5, .6, .7, .8, .9 | 2.6.23 .0, .1, .10, .11, .12, .13, .14, .15, .16, .17, .2, .3, .4, .5, .6, .7, .8, .9 | 2.6.24 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.25 .0, .1, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .2, .20, .3, .4, .5, .6, .7, .8, .9 | 2.6.26 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.27 .0, .1, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .2, .20, .21, .22, .23, .24, .25, .26, .27, .28, .29, .3, .30, .31, .32, .33, .34, .35, .36, .37, .38, .39, .4, .40, .41, .42, .43, .44, .45, .46, .47, .48, .49, .5, .50, .51, .6, .7, .8, .9 | 2.6.28 .0, .1, .10, .2, .3, .4, .5, .6, .7, .8, .9 | 2.6.29 .0, .1, .2, .3 | 2.6.3 .0 | 2.6.30 .1, .2, .3, .4, .5, .6, .7, .8, .9, Base | 2.6.31 .1, .2, .3, .4, .5, .6, .7, .8, Base | 2.6.32 .1, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .2, .3, .4, .5, .6, .7, .8, .9, Base | 2.6.33 .1, .2, .3, .4, .5, .6, .7, Base | 2.6.34 .1, .2, .3, .4, .5, .6, .7, Base | 2.6.35 .1, .2, .3, .4, Base | 2.6.4 .0 | 2.6.5 .0 | 2.6.6 .0 | 2.6.7 .0 | 2.6.8 .0, .1 | 2.6.9 .0 |
| Associated Products: |
| CentOS Project | CentOS | 4 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64, .3 i386, .3 x86_64, .4 i386, .4 x86_64, .5 i386, .5 x86_64, .6 i386, .6 x86_64, .7 i386, .7 x86_64 | 5 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64, .3 i386, .3 x86_64, .4 i386, .4 x86_64, .5 i386, .5 x86_64 |
| MontaVista | MontaVista Linux | 6 Base | CGE 4.0.1, 5.1 | Mobilinux 4.1, 5.0 | Professional 4.0.1 |
| Red Hat, Inc. | Red Hat Desktop | 4 IA-32, x86_64 |
| Red Hat, Inc. | Red Hat Enterprise Linux | 5 IA-32, IA-64, PPC, ppc64, s390x, x86_64 |
| Red Hat, Inc. | Red Hat Enterprise Linux Advanced Server | 3 i386, i686 | 4 IA-32, IA-64, PPC, ppc64, ppc64iseries, s390, s390x, x86_64 | 4.7.z IA-32, IA-64, PPC, ppc64, ppc64iseries, s390, s390x, x86_64 | 4.8.z IA-32, IA-64, PPC, ppc64, ppc64iseries, s390, s390x, x86_64 |
| Red Hat, Inc. | Red Hat Enterprise Linux Desktop | 5 IA-32, x86_64 | 6 IA-32, x86_64 |
| Red Hat, Inc. | Red Hat Enterprise Linux Enterprise Server | 3 i386, i686 | 4 IA-32, IA-64, x86_64 | 4.7.z IA_32, IA_64, x86_64 | 4.8.z IA-32, IA-64, x86_64 |
| Red Hat, Inc. | Red Hat Enterprise Linux EUS (Extended Update Supp | 5.3.z IA-32, IA-64, PPC, ppc64, x86_64 | 5.4.z IA-32, IA-64, PPC, PPC64, s390x, x86_64 |
| Red Hat, Inc. | Red Hat Enterprise Linux HPC Node | 6 x86_64 |
| Red Hat, Inc. | Red Hat Enterprise Linux Server | 6 IA-32, PPC, PPC 64, s390x, x86_64 |
| Red Hat, Inc. | Red Hat Enterprise Linux Workstation | 3 i386, i686 | 4 IA-32, IA-64, x86_64 | 6 IA-32, x86_64 |
| Red Hat, Inc. | Red Hat Enterprise MRG for Enterprise Linux | 1 ia-32, x86_64 |
| VMware, Inc. | VMware ESX Server | 4.0 Base | 4.1 Base |
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LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME. |
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