Linux Kernel 2.4.0 on IA64 Switch-Code psr.mfh denial of service

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.00

A vulnerability was found in Linux Kernel 2.4.0 on IA64 (Operating System) and classified as problematic. Affected by this issue is an unknown part of the file psr.mfh of the component Switch-Code. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is confidentiality. CVE summarizes:

Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH bit but does not verify the FPH owner, which allows local users to read register values of other processes by setting the MFH bit.

The bug was discovered 05/28/2004. The weakness was disclosed 05/28/2004 by Arun Sharma as Bug 124734 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2004-0565 since 06/15/2004. The attack needs to be done within the local network. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 16054 (RHEL 3 : kernel (RHSA-2004:689)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l.

Upgrading to version 2.4.26 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at bugzilla.redhat.com. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published 8 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (16644) and Tenable (16054). secunia.com is providing further details. The entry 1084 is pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
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CVSSv2info

AVACAuCIA
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept

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Nessus ID: 16054
Nessus Name: RHEL 3 : kernel (RHSA-2004:689)
Nessus File: 🔍
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OpenVAS ID: 54623
OpenVAS Name: Gentoo Security Advisory GLSA 200407-16 (Kernel)
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OpenVAS Family: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Upgrade: Kernel 2.4.26
Patch: bugzilla.redhat.com

Timelineinfo

05/28/2004 🔍
05/28/2004 +0 days 🔍
05/28/2004 +0 days 🔍
06/15/2004 +18 days 🔍
06/19/2004 +4 days 🔍
07/07/2004 +18 days 🔍
07/09/2004 +1 days 🔍
07/13/2004 +4 days 🔍
12/06/2004 +146 days 🔍
12/23/2004 +17 days 🔍
12/27/2004 +4 days 🔍
06/30/2005 +185 days 🔍
06/28/2019 +5111 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 124734
Researcher: Arun Sharma
Status: Not defined

CVE: CVE-2004-0565 (🔍)
OVAL: 🔍

X-Force: 16644 - Linux kernel ia64 information disclosure, Medium Risk
Vulnerability Center: 8467 - Linux Kernel 2.4.x Allows Obtaining Information via Floating Point Leak, Low
SecurityFocus: 10687 - Linux Kernel Floating Point Register Contents Leak Vulnerability
Secunia: 11943 - Linux Kernel Floating Point Leak Vulnerability, Not Critical
OSVDB: 7585 - Linux Kernel MFH Bit Information Disclosure

scip Labs: https://www.scip.ch/en/?labs.20161013
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Entryinfo

Created: 07/13/2004 12:39
Updated: 06/28/2019 21:03
Changes: 07/13/2004 12:39 (103), 06/28/2019 21:03 (1)
Complete: 🔍

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