Linux kernel /proc race condition
| linux-proc-race-condition (27790) |  Medium Risk |
Description:
Linux kernel could allow a local attacker to gain elevated privileges on the system, caused by a race condition in /proc. An attacker could exploit this vulnerability using prctl with PR_SET_DUMPABLE to gain root privileges on the system.
*CVSS:
| Base Score: | 3.4 |
| Access Vector: | Local |
| Access Complexity: | High |
| Authentication: | Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 2.5 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
Remedy:
Upgrade to the latest version of Linux kernel (2.6.17.6 or later), available from The Linux Kernel Archives Web site. See References.
For Debian GNU/Linux:
Refer to DSA-1111-1 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux:
Refer to RHSA-2006:0617-15 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:047 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:049 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, Fri Jul 14 2006 - 15:35:17 CDT: Linux kernel 0day - dynamite inside, don't burn your fingers.
- Red Hat Bugzilla Bug 198973: CVE-2006-3626 Nasty /proc privilege escalation.
- The Linux Kernel Archives Web site: The Linux Kernel Archives.
- The Linux Kernel Archives Web site: ChangeLog-2.6.17.5.
- ASA-2006-203: kernel security update (RHSA-2006-0617)
- BID-18992: Linux Kernel PROC Filesystem Local Privilege Escalation Vulnerability
- CVE-2006-3626: Race condition in Linux kernel 2.6.17.4 and earlier allows local users to gain root privileges by using prctl with PR_SET_DUMPABLE in a way that causes /proc/self/environ to become setuid root.
- DSA-1111: kernel-source-2.6.8 -- race condition
- MDKSA-2006:124: Updated kernel packages fix privilege escalation vulnerability
- OSVDB ID: 27120: Linux Kernel /proc/self/environ prctl Race Condition Local Privilege Escalation
- RHSA-2006-0617: kernel security update
- SA21041: Linux Kernel "/proc" Race Condition Privilege Escalation
- SA22174: Avaya Products Linux Kernel Multiple Vulnerabilities
- SUSE-SA:2006:042: kernel local privilege escalation
- SUSE-SA:2006:047: kernel security problems
- SUSE-SA:2006:049: kernel security problems
- SUSE-SR:2006:017: SUSE Security Summary Report
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 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 2.6.16.10
- 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 2.6.16.3
- Linux Kernel 2.6.16.4
- Linux Kernel 2.6.16.5
- 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 rc5
- Linux Kernel 2.6.17 rc3
- Linux Kernel 2.6.17 rc2
- Linux Kernel 2.6.17 rc4
- Linux Kernel 2.6.17
- Linux Kernel 2.6.17 rc1
- Linux Kernel 2.6.17 rc6
- Linux Kernel 2.6.17.1
- Linux Kernel 2.6.17.2
- Linux Kernel 2.6.17.3
- Linux Kernel 2.6.17.4
- MandrakeSoft Mandrake Linux 2006
- MandrakeSoft Mandrake Linux 2006 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Multi Network Firewall 2.0
- Novell Linux Desktop 9
- Novell Open Enterprise Server
- Novell Open Enterprise Server
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 4 Desktop
- SuSE Linux Enterprise Server 8
- SUSE SuSE Linux 10.1
- SUSE SuSE Linux 9.1
- SuSE SuSE SLED 10
- SuSE SuSE SLES 10
- SuSE SuSE SLES 9
- Turbolinux Turbolinux 10 Server
- Turbolinux Turbolinux 10 Server x64 Ed
- Turbolinux Turbolinux FUJI
- Turbolinux Turbolinux Appliance Server 2.0
Reported:
Jul 14, 2006
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.