Red Hat Linux XFS privilege escalation
| redhat-xfs-privilege-escalation (35375) |  Medium Risk |
Description:
Red Hat Linux could allow a local attacker to gain elevated privileges on the system, caused by a race condition in the X Font Server (XFS) when handling temporary files during system startup or shutdown. An attacker could exploit this vulnerability to execute arbitrary code with root privileges.
*CVSS:
| Base Score: | 5.6 |
| Access Vector: | Local |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 4.6 |
| Exploitability: | Functional |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
Remedy:
For Red Hat Linux (xorg-x11):
Refer to RHSA-2007:0519-2 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux (xorg-x11-xfs):
Refer to RHSA-2007:0520-2 for patch, upgrade, or suggested workaround information. See References.
For Debian Linux (xfs):
Refer to DSA-1342-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- iDefense Labs PUBLIC ADVISORY: 07.12.07: Red Hat Enterprise Linux init.d XFS Script chown Race Condition Vulnerability.
- ASA-2007-324: xorg-x11 security update (RHSA-2007-0519)
- BID-24888: X.Org XFS Init Script Insecure Temporary File Creation Vulnerability
- CVE-2007-3103: The init.d script for the X.Org X11 xfs font server on various Linux distributions might allow local users to change the permissions of arbitrary files via a symlink attack on the /tmp/.font-unix temporary file.
- DSA-1342: xfs -- race condition
- GLSA-200710-11: X Font Server: Multiple Vulnerabilities
- RHSA-2007-0519: Moderate: xorg-x11 security update
- RHSA-2007-0520: Moderate: xorg-x11-xfs security update
- SECTRACK ID: 1018375: X Font Server Temporary File Race Conditions Lets Local Users Gain Elevated Privileges
- VUPEN/ADV-2007-2515: Redhat Security Update Fixes X.Org XFS Script Privilege Escalation Vulnerability
Platforms Affected:
- Debian Debian Linux 4.0
- Gentoo Linux
- RedHat Enterprise Linux 4 Desktop
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 5 Client Workstation
- RedHat Enterprise Linux 5 Server
- RedHat Enterprise Linux 5
Reported:
Jul 12, 2007
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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.