Linux kernel mprotect security bypass
| linux-mprotect-security-bypass (26169) |  Medium Risk |
Description:
Linux kernel could allow a local attacker to bypass security restrictions, caused by improper validation of shared memory permissions in the ipc/shm.c file. An attacker could exploit this vulnerability using the mprotect command to gain write access to read-only attachments and shared memory.
Platforms Affected:
- Canonical, Ubuntu 5.04
- Canonical, Ubuntu 5.10
- Canonical, Ubuntu 6.06 LTS
- Linux, Kernel 2.4.0 test10
- Linux, Kernel 2.4.0 test5
- Linux, Kernel 2.4.0 test9
- Linux, Kernel 2.4.0 test8
- Linux, Kernel 2.4.0 test7
- Linux, Kernel 2.4.0
- Linux, Kernel 2.4.0 test1
- Linux, Kernel 2.4.0 test6
- Linux, Kernel 2.4.0 test11
- Linux, Kernel 2.4.0 test12
- Linux, Kernel 2.4.0 test2
- Linux, Kernel 2.4.0 test3
- Linux, Kernel 2.4.0 test4
- Linux, Kernel 2.4.1
- Linux, Kernel 2.4.10
- Linux, Kernel 2.4.11
- 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 x86
- Linux, Kernel 2.4.18
- Linux, Kernel 2.4.18 pre8
- Linux, Kernel 2.4.18 pre7
- Linux, Kernel 2.4.18 pre6
- Linux, Kernel 2.4.18 pre5
- Linux, Kernel 2.4.18 pre4
- Linux, Kernel 2.4.18 pre3
- Linux, Kernel 2.4.18 pre2
- Linux, Kernel 2.4.18 pre1
- Linux, Kernel 2.4.19 pre3
- Linux, Kernel 2.4.19 pre6
- Linux, Kernel 2.4.19 pre5
- Linux, Kernel 2.4.19 pre4
- Linux, Kernel 2.4.19 pre2
- 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 pre7
- Linux, Kernel 2.4.21 pre4
- Linux, Kernel 2.4.21
- Linux, Kernel 2.4.22
- Linux, Kernel 2.4.23
- Linux, Kernel 2.4.23 pre9
- Linux, Kernel 2.4.23 ow2
- 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 pre4
- Linux, Kernel 2.4.27 pre5
- Linux, Kernel 2.4.27
- Linux, Kernel 2.4.27 pre1
- Linux, Kernel 2.4.27 pre2
- Linux, Kernel 2.4.27 pre3
- Linux, Kernel 2.4.28
- Linux, Kernel 2.4.29 rc2
- Linux, Kernel 2.4.29 rc1
- Linux, Kernel 2.4.29
- Linux, Kernel 2.4.3
- Linux, Kernel 2.4.30
- Linux, Kernel 2.4.30 rc3
- Linux, Kernel 2.4.30 rc2
- Linux, Kernel 2.4.31 pre1
- Linux, Kernel 2.4.31
- Linux, Kernel 2.4.32 pre1
- Linux, Kernel 2.4.32 pre2
- Linux, Kernel 2.4.32
- Linux, Kernel 2.4.33 pre1
- 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
- Linux, Kernel 2.6.0 test9-cvs
- Linux, Kernel 2.6.0
- Linux, Kernel 2.6.0 test1
- Linux, Kernel 2.6.0 test10
- Linux, Kernel 2.6.0 test11
- Linux, Kernel 2.6.0 test2
- Linux, Kernel 2.6.0 test3
- Linux, Kernel 2.6.0 test4
- Linux, Kernel 2.6.0 test5
- Linux, Kernel 2.6.0 test6
- Linux, Kernel 2.6.0 test8
- Linux, Kernel 2.6.0 test9
- Linux, Kernel 2.6.0 test7
- Linux, Kernel 2.6.1
- Linux, Kernel 2.6.1 rc2
- Linux, Kernel 2.6.1 rc1
- Linux, Kernel 2.6.10
- Linux, Kernel 2.6.10 rc2
- Linux, Kernel 2.6.11 rc4
- Linux, Kernel 2.6.11
- Linux, Kernel 2.6.11 rc3
- Linux, Kernel 2.6.11 rc2
- Linux, Kernel 2.6.11.11
- Linux, Kernel 2.6.11.12
- 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 2.6.12 rc5
- Linux, Kernel 2.6.12 rc4
- Linux, Kernel 2.6.12 rc1
- Linux, Kernel 2.6.12.1
- Linux, Kernel 2.6.12.2
- 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
- Linux, Kernel 2.6.13 rc4
- Linux, Kernel 2.6.13 rc1
- Linux, Kernel 2.6.13 rc7
- 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 2.6.14 rc1
- Linux, Kernel 2.6.14 rc4
- Linux, Kernel 2.6.14 rc2
- Linux, Kernel 2.6.14
- Linux, Kernel 2.6.14 rc3
- 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 2.6.15 rc2
- Linux, Kernel 2.6.15 rc3
- Linux, Kernel 2.6.15
- Linux, Kernel 2.6.15 rc1
- Linux, Kernel 2.6.15.1
- 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 2.6.16
- Linux, Kernel 2.6.2
- Linux, Kernel 2.6.3
- Linux, Kernel 2.6.4
- Linux, Kernel 2.6.5
- Linux, Kernel 2.6.6 rc1
- Linux, Kernel 2.6.6
- Linux, Kernel 2.6.7 rc1
- Linux, Kernel 2.6.7
- Linux, Kernel 2.6.8 rc2
- Linux, Kernel 2.6.8 rc1
- Linux, Kernel 2.6.8
- Linux, Kernel 2.6.8 rc3
- Linux, Kernel 2.6.9
- MandrakeSoft, Mandrake Linux 2006 X86_64
- MandrakeSoft, Mandrake Linux 2006
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 2.1 WS
- RedHat, Enterprise Linux 3 ES
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 3 AS
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 WS
- RedHat, Linux Advanced Workstation 2.1 Itanium
- VMware, ESX Server 2.0.2
- VMware, ESX Server 2.1.3
- VMware, ESX Server 2.5.3
- VMware, ESX Server 2.5.4
Remedy:
Upgrade to the latest stable version of Linux kernel (2.6.16.9 or later), available from The Linux Kernel Archives. 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 Red Hat Linux 3:
Refer to RHSA-2006:0710-7 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux 4:
Refer to RHSA-2006:0689-15 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 VMware 2.5.3:
Apply the patch for this vulnerability, as listed in the VMware Advisory esx-253-200610-patch. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Bypass Security
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 at http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0223.html.
- Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:22:38 CST, VMSA-2006-0006 - VMware ESX Server 2.5.3 Upgrade Patch 4 at http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0226.html.
- Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:22:54 CST, VMSA-2006-0007 - VMware ESX Server 2.1.3 Upgrade Patch 2 at http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0224.html.
- Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:23:03 CST, VMSA-2006-0008 - VMware ESX Server 2.0.2 Upgrade Patch 2 at http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0225.html.
- Red Hat Bugzilla Bug 190073, CVE-2006-2071 mprotect gives write permission to a readonly attachment at https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=190073.
- The Linux Kernel Archives Web site, ChangeLog-2.6.16.6 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.6.
- The Linux Kernel Archives Web site, ChangeLog-2.6.16.7 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.7.
- The The Linux Kernel Archives, The Linux Kernel Archives at http://www.kernel.org/.
- VMware Advisory esx-253-200610-patch, VMware ESX Server 2.5.3 Upgrade Patch 4 (for 2.5.3 Systems Only) at http://www.vmware.com/download/esx/esx-253-200610-patch.html.
- VMware Web site, VMware ESX Server 2.0.2 Upgrade Patch 2 (for 2.0.2 Systems Only) at http://www.vmware.com/download/esx/esx-202-200610-patch.html.
- VMware Web site, VMware ESX Server 2.1.3 Upgrade Patch 2 (for 2.1.3 Systems Only) at http://www.vmware.com/download/esx/esx-213-200610-patch.html.
- VMware Web site, VMware ESX Server 2.5.4 Upgrade Patch 1 (for 2.5.4 Systems Only) at http://www.vmware.com/download/esx/esx-254-200610-patch.html.
- ASA-2006-143: kernel security update (RHSA-2006-0580)
- ASA-2006-249: kernel security update (RHSA-2006-0689)
- ASA-2006-254: kernel security update (RHSA-2006-0710)
- CVE-2006-2071: Linux kernel 2.4.x and 2.6.x up to 2.6.16 allows local users to bypass IPC permissions and modify a readonly attachment of shared memory by using mprotect to give write permission to the attachment. NOTE: some original raw sources combined this issue with CVE-2006-1524, but they are different bugs.
- FrSIRT/ADV-2006-1391: Linux Kernel Memory Mapping Potection Local Security Bypass Vulnerability
- FrSIRT/ADV-2006-4502: VMware ESX Server Security Update Fixes Multiple Buffer Overflow Vulnerabilities
- MDKSA-2006:086: Updated kernel packages fix multiple vulnerabilities
- RHSA-2006-0579: kernel security update
- RHSA-2006-0580: kernel security update
- RHSA-2006-0689: kernel security update
- RHSA-2006-0710: kernel security update
- SA22875: VMware ESX Server Multiple Vulnerabilities
- SA22945: Avaya Products Linux Kernel Multiple Vulnerabilities
- SA23064: Avaya Products Linux Kernel Multiple Vulnerabilities
- USN-302-1: Linux kernel vulnerabilities
Reported:
Apr 27, 2006
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