CVE-2005-0109

Name: CVE-2005-0109
Creator: NVD / NIST
Published: 2005-03-05T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.6/10EPSS 0.51%

Last modified Jun 16, 2026

CVE-2005-0109 is a medium-severity vulnerability rated 5.6/10 on the CVSS scale. Hyper-Threading technology, as used in FreeBSD and other operating systems that are run on Intel Pentium and other processors, allows local users to use a malicious thread to create covert channels, monitor the execution of other threads, and obtain sensitive information such as cryptographic keys, via a timing attack on memory cache misses.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

Hyper-Threading technology, as used in FreeBSD and other operating systems that are run on Intel Pentium and other processors, allows local users to use a malicious thread to create covert channels, monitor the execution of other threads, and obtain sensitive information such as cryptographic keys, via a timing attack on memory cache misses.

Metrics

CVSS 3.0

5.6/10

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS Probability

0.51%

39.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions	Update
Freebsd	Freebsd	1.1.5.1	—
Freebsd	Freebsd	2.0	—
Freebsd	Freebsd	2.0.5	—
Freebsd	Freebsd	2.1.0	—
Freebsd	Freebsd	2.1.5	—
Freebsd	Freebsd	2.1.6	—
Freebsd	Freebsd	2.1.6.1	—
Freebsd	Freebsd	2.1.7.1	—
Freebsd	Freebsd	2.2	—
Freebsd	Freebsd	2.2.2	—
Freebsd	Freebsd	2.2.3	—
Freebsd	Freebsd	2.2.4	—
Freebsd	Freebsd	2.2.5	—
Freebsd	Freebsd	2.2.6	—
Freebsd	Freebsd	2.2.8	—
Freebsd	Freebsd	3.0	—
Freebsd	Freebsd	3.1	—
Freebsd	Freebsd	3.2	—
Freebsd	Freebsd	3.3	—
Freebsd	Freebsd	3.4	—
Freebsd	Freebsd	3.5	—
Freebsd	Freebsd	3.5.1	—
Freebsd	Freebsd	4.0	—
Freebsd	Freebsd	4.1	—
Freebsd	Freebsd	4.1.1	—
Freebsd	Freebsd	4.2	—
Freebsd	Freebsd	4.3	—
Freebsd	Freebsd	4.4	—
Freebsd	Freebsd	4.5	—
Freebsd	Freebsd	4.6	—
Freebsd	Freebsd	4.6.2	—
Freebsd	Freebsd	4.7	—
Freebsd	Freebsd	4.8	—
Freebsd	Freebsd	4.9	—
Freebsd	Freebsd	4.10	—
Freebsd	Freebsd	4.11	Release P3
Freebsd	Freebsd	5.0	—
Freebsd	Freebsd	5.1	—
Freebsd	Freebsd	5.2	—
Freebsd	Freebsd	5.2.1	Release
Freebsd	Freebsd	5.3	—
Freebsd	Freebsd	5.4	Pre-Release
Redhat	Enterprise Linux	2.1	—
Redhat	Enterprise Linux	3.0	—
Redhat	Enterprise Linux	4.0	—
Redhat	Enterprise Linux Desktop	3.0	—
Redhat	Enterprise Linux Desktop	4.0	—
Redhat	Fedora Core	core_3.0	—
Sco	Openserver	5.0.7	—
Sco	Unixware	7.1.3	—

Showing 50 of 58 affected configurations. See NVD for the full list.

References

ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.24/SCOSA-2005.24.txtThird Party Advisory
http://marc.info/?l=freebsd-hackers&m=110994026421858&w=2Mailing List
http://marc.info/?l=freebsd-security&m=110994370429609&w=2Mailing List
http://marc.info/?l=openbsd-misc&m=110995101417256&w=2Mailing List
http://secunia.com/advisories/15348Permissions Required
http://secunia.com/advisories/18165Permissions Required
http://securitytracker.com/id?1013967Patch, Third Party Advisory, VDB Entry, Vendor Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101739-1Vendor Advisory
http://www-1.ibm.com/support/docview.wss?uid=isg1SSRVHMCHMC_C081516_754Broken Link
http://www.daemonology.net/hyperthreading-considered-harmful/Third Party Advisory
http://www.daemonology.net/papers/htt.pdfThird Party Advisory
http://www.kb.cert.org/vuls/id/911878Third Party Advisory, US Government Resource
http://www.redhat.com/support/errata/RHSA-2005-476.htmlNot Applicable
http://www.redhat.com/support/errata/RHSA-2005-800.htmlNot Applicable
http://www.securityfocus.com/bid/12724Patch, Third Party Advisory, VDB Entry, Vendor Advisory
http://www.vupen.com/english/advisories/2005/0540Permissions Required
http://www.vupen.com/english/advisories/2005/3002Permissions Required
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9747Third Party Advisory
ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.24/SCOSA-2005.24.txtThird Party Advisory
http://marc.info/?l=freebsd-hackers&m=110994026421858&w=2Mailing List
http://marc.info/?l=freebsd-security&m=110994370429609&w=2Mailing List
http://marc.info/?l=openbsd-misc&m=110995101417256&w=2Mailing List
http://secunia.com/advisories/15348Permissions Required
http://secunia.com/advisories/18165Permissions Required
http://securitytracker.com/id?1013967Patch, Third Party Advisory, VDB Entry, Vendor Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101739-1Vendor Advisory
http://www-1.ibm.com/support/docview.wss?uid=isg1SSRVHMCHMC_C081516_754Broken Link
http://www.daemonology.net/hyperthreading-considered-harmful/Third Party Advisory
http://www.daemonology.net/papers/htt.pdfThird Party Advisory
http://www.kb.cert.org/vuls/id/911878Third Party Advisory, US Government Resource
http://www.redhat.com/support/errata/RHSA-2005-476.htmlNot Applicable
http://www.redhat.com/support/errata/RHSA-2005-800.htmlNot Applicable
http://www.securityfocus.com/bid/12724Patch, Third Party Advisory, VDB Entry, Vendor Advisory
http://www.vupen.com/english/advisories/2005/0540Permissions Required
http://www.vupen.com/english/advisories/2005/3002Permissions Required
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9747Third Party Advisory

Timeline

Published: Mar 5, 2005
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2005-0109?

How severe is CVE-2005-0109?

CVE-2005-0109 has a CVSS score of 5.6/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2005-0109?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2005-0109?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST