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.
Platforms Affected:
- Debian, Debian Linux 4.0
- Gentoo, Linux
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 5 Client Workstation
- RedHat, Enterprise Linux 5 Client
- RedHat, Enterprise Linux 5 Server
- RedHat, Enterprise Linux 5
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.
Consequences:
Gain Privileges
References:
- iDefense Labs PUBLIC ADVISORY: 07.12.07, Red Hat Enterprise Linux init.d XFS Script chown Race Condition Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=557.
- 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
- FrSIRT/ADV-2007-2515: Redhat Security Update Fixes X.Org XFS Script Privilege Escalation Vulnerability
- 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
Reported:
Jul 12, 2007
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