(EnGarde Issues Fix) Linux Kernel Real-time Clock Routines May Leak Kernel Data to User Applications
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SecurityTracker Alert ID: 1008598 |
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SecurityTracker URL: http://securitytracker.com/id/1008598
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CVE Reference:
CVE-2003-0984
(Links to External Site)
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Date: Jan 5 2004
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Impact:
Disclosure of authentication information, Disclosure of system information, Disclosure of user information
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): EnGarde Secure Community 2, EnGarde Secure Professional v1.5
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Description:
A vulnerability was reported in the Linux 2.4 kernel in the real-time clock routines. A local user may be able to view leaked kernel data.
In December 2003, it was reported that real time clock routines in the Linux kernel do not properly initialize memory structures. As a result, a local user may be able to access the routines to view kernel stack data.
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Impact:
A local user may be able to view some kernel data.
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Solution:
Guardian Digital has released a fix, available to Guardian Digital Secure Network subscribers.
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Vendor URL: www.kernel.org/ (Links to External Site)
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Cause:
State error
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Underlying OS:
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Mon, 5 Jan 2004 09:19:34 -0500 (EST)
Subject: [ESA-20040105-001] 'kernel' bug and security fixes.
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| Guardian Digital Security Advisory January 05, 2003 |
| http://www.guardiandigital.com ESA-20040105-001 |
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| Package: kernel |
| Summary: bug and security fixes. |
+------------------------------------------------------------------------+
EnGarde Secure Linux is an enterprise class Linux platform engineered
to enable corporations to quickly and cost-effectively build a complete
and secure Internet presence while preventing Internet threats.
OVERVIEW
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This update fixes two security issues and one critical bug in the Linux
Kernel shipped with EnGarde Secure Linux.
A summary of the bugs fixed:
* An EnGarde-specific memory leak in the LIDS code has been fixed.
This memory leak could cause a machine, over time, to freeze up.
* A security vulnerability in the mremap(2) system call was recently
discovered by Paul Starzetz. The incorrect bounds checking done
in this system call could be exploited by a local user to gain root
privileges.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2003-0985 to this issue.
* A somewhat less critical vulnerability has been found in the Linux
RTC code. This vulnerability may leak small bits of arbitrary
kernel memory to user land.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2003-0984 to this issue.
Guardian Digital products affected by this issue include:
EnGarde Secure Community 2
EnGarde Secure Professional v1.5
It is recommended that all users apply this update as soon as possible.
SOLUTION
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Guardian Digital Secure Network subscribers may automatically update
affected systems by accessing their account from within the Guardian
Digital WebTool.
To modify your GDSN account and contact preferences, please go to:
https://www.guardiandigital.com/account/
REFERENCES
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Guardian Digital's public key:
http://ftp.engardelinux.org/pub/engarde/ENGARDE-GPG-KEY
Official Web Site of the Linux Kernel:
http://www.kernel.org/
Guardian Digital Advisories:
http://infocenter.guardiandigital.com/advisories/
Security Contact: security@guardiandigital.com
- --------------------------------------------------------------------------
Author: Ryan W. Maple <ryan@guardiandigital.com>
Copyright 2004, Guardian Digital, Inc.
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Copyright(c) 2003 Guardian Digital, Inc. GuardianDigital.com
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