Vulnerability Note VU#337238

Red Hat Enterprise Linux kernel-2.4.21 does not perform adequate checking of eflags when in 32-bit ptrace emulation mode

Overview

Red Hat Enterprise Linux kernel prior to version 2.4.21 does not perform adequate checking of eflags when in 32-bit ptrace emulation mode. This could allow a local user to gain elevated or root privileges.

I. Description

The Linux kernel handles the basic functionality of the operating system. There is a vulnerability in the checking of eflags when in 32-bit ptrace emulation mode allowing a local user to gain elevated or root privileges. This vulnerability is reported to only affect kernels built for the AMD64 architecture.

II. Impact

A local user could gain elevated or root privileges.

III. Solution

Upgrade or Apply Patch
Upgrade or apply patch as specified by your vendor.

Systems Affected

Vendor	Status	Date Notified	Date Updated
Red Hat Inc.	Vulnerable	20-Jan-2004

References

https://rhn.redhat.com/errata/RHSA-2004-017.html
http://www.secunia.com/advisories/10658/
http://www.ciac.org/ciac/bulletins/o-063.shtml

Credit

Thanks to Red Hat Inc. for the information contained in their advisory.

This document was written by Damon Morda.

Other Information

Date Public:	2004-01-16
Date First Published:	2004-01-20
Date Last Updated:	2004-01-20
CERT Advisory:
CVE-ID(s):	CAN-2004-0001
NVD-ID(s):	CAN-2004-0001
US-CERT Technical Alerts:
Metric:	2.95
Document Revision:	12

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