CVE-2005-0109
Hyper-Threading technology, as used in FreeBSD and other operating systems that are run on Intel...
CVE-2005-0109 is a medium vulnerability (CVSS 5.6) in Freebsd, published March 5, 2005. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. Fixed in openssl 0:0.9.7a-33.15.
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
5.6
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.
- Record
CVE-2005-0109- CVSS 3.0
- 5.6 Medium
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N - CVSS 2.0
- 4.7 Medium
AV:L/AC:M/Au:N/C:C/I:N/A:N - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2005-0109- Updated
- 2026-11-02
EUVDEUVD-2005-0110 No score
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.
- Record
EUVD-2005-0110- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3h63-pxm6-2x4m
5.6
Hyper-Threading technology, as used in FreeBSD and other operating systems that are run on Intel...
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.
- Record
GHSA-3h63-pxm6-2x4m- CVSS 3.0
- 5.6 Medium
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
opensslRed Hat:enterprise_linux:3::as |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-debuginfoRed Hat:enterprise_linux:3::as |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-develRed Hat:enterprise_linux:3::as |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-perlRed Hat:enterprise_linux:3::as |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl096bRed Hat:enterprise_linux:3::as |
before 0:0.9.6b-16.22.3 | 0:0.9.6b-16.22.3 |
openssl096b-debuginfoRed Hat:enterprise_linux:3::as |
before 0:0.9.6b-16.22.3 | 0:0.9.6b-16.22.3 |
opensslRed Hat:enterprise_linux:3::desktop |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-debuginfoRed Hat:enterprise_linux:3::desktop |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-develRed Hat:enterprise_linux:3::desktop |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-perlRed Hat:enterprise_linux:3::desktop |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
Show 86 moreShow less
| Package | Affected | Fixed |
|---|---|---|
openssl096bRed Hat:enterprise_linux:3::desktop |
before 0:0.9.6b-16.22.3 | 0:0.9.6b-16.22.3 |
openssl096b-debuginfoRed Hat:enterprise_linux:3::desktop |
before 0:0.9.6b-16.22.3 | 0:0.9.6b-16.22.3 |
opensslRed Hat:enterprise_linux:3::es |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-debuginfoRed Hat:enterprise_linux:3::es |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-develRed Hat:enterprise_linux:3::es |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-perlRed Hat:enterprise_linux:3::es |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl096bRed Hat:enterprise_linux:3::es |
before 0:0.9.6b-16.22.3 | 0:0.9.6b-16.22.3 |
openssl096b-debuginfoRed Hat:enterprise_linux:3::es |
before 0:0.9.6b-16.22.3 | 0:0.9.6b-16.22.3 |
opensslRed Hat:enterprise_linux:3::ws |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-debuginfoRed Hat:enterprise_linux:3::ws |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-develRed Hat:enterprise_linux:3::ws |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl-perlRed Hat:enterprise_linux:3::ws |
before 0:0.9.7a-33.15 | 0:0.9.7a-33.15 |
openssl096bRed Hat:enterprise_linux:3::ws |
before 0:0.9.6b-16.22.3 | 0:0.9.6b-16.22.3 |
openssl096b-debuginfoRed Hat:enterprise_linux:3::ws |
before 0:0.9.6b-16.22.3 | 0:0.9.6b-16.22.3 |
opensslRed Hat:enterprise_linux:4::as |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-debuginfoRed Hat:enterprise_linux:4::as |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-develRed Hat:enterprise_linux:4::as |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-perlRed Hat:enterprise_linux:4::as |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl096bRed Hat:enterprise_linux:4::as |
before 0:0.9.6b-22.3 | 0:0.9.6b-22.3 |
openssl096b-debuginfoRed Hat:enterprise_linux:4::as |
before 0:0.9.6b-22.3 | 0:0.9.6b-22.3 |
opensslRed Hat:enterprise_linux:4::desktop |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-debuginfoRed Hat:enterprise_linux:4::desktop |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-develRed Hat:enterprise_linux:4::desktop |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-perlRed Hat:enterprise_linux:4::desktop |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl096bRed Hat:enterprise_linux:4::desktop |
before 0:0.9.6b-22.3 | 0:0.9.6b-22.3 |
openssl096b-debuginfoRed Hat:enterprise_linux:4::desktop |
before 0:0.9.6b-22.3 | 0:0.9.6b-22.3 |
opensslRed Hat:enterprise_linux:4::es |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-debuginfoRed Hat:enterprise_linux:4::es |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-develRed Hat:enterprise_linux:4::es |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-perlRed Hat:enterprise_linux:4::es |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl096bRed Hat:enterprise_linux:4::es |
before 0:0.9.6b-22.3 | 0:0.9.6b-22.3 |
openssl096b-debuginfoRed Hat:enterprise_linux:4::es |
before 0:0.9.6b-22.3 | 0:0.9.6b-22.3 |
opensslRed Hat:enterprise_linux:4::ws |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-debuginfoRed Hat:enterprise_linux:4::ws |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-develRed Hat:enterprise_linux:4::ws |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl-perlRed Hat:enterprise_linux:4::ws |
before 0:0.9.7a-43.2 | 0:0.9.7a-43.2 |
openssl096bRed Hat:enterprise_linux:4::ws |
before 0:0.9.6b-22.3 | 0:0.9.6b-22.3 |
openssl096b-debuginfoRed Hat:enterprise_linux:4::ws |
before 0:0.9.6b-22.3 | 0:0.9.6b-22.3 |
opensslRed Hat:enterprise_linux:3::as |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-debuginfoRed Hat:enterprise_linux:3::as |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-develRed Hat:enterprise_linux:3::as |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-perlRed Hat:enterprise_linux:3::as |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl096bRed Hat:enterprise_linux:3::as |
before 0:0.9.6b-16.22.4 | 0:0.9.6b-16.22.4 |
openssl096b-debuginfoRed Hat:enterprise_linux:3::as |
before 0:0.9.6b-16.22.4 | 0:0.9.6b-16.22.4 |
opensslRed Hat:enterprise_linux:3::desktop |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-debuginfoRed Hat:enterprise_linux:3::desktop |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-develRed Hat:enterprise_linux:3::desktop |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-perlRed Hat:enterprise_linux:3::desktop |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl096bRed Hat:enterprise_linux:3::desktop |
before 0:0.9.6b-16.22.4 | 0:0.9.6b-16.22.4 |
openssl096b-debuginfoRed Hat:enterprise_linux:3::desktop |
before 0:0.9.6b-16.22.4 | 0:0.9.6b-16.22.4 |
opensslRed Hat:enterprise_linux:3::es |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-debuginfoRed Hat:enterprise_linux:3::es |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-develRed Hat:enterprise_linux:3::es |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-perlRed Hat:enterprise_linux:3::es |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl096bRed Hat:enterprise_linux:3::es |
before 0:0.9.6b-16.22.4 | 0:0.9.6b-16.22.4 |
openssl096b-debuginfoRed Hat:enterprise_linux:3::es |
before 0:0.9.6b-16.22.4 | 0:0.9.6b-16.22.4 |
opensslRed Hat:enterprise_linux:3::ws |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-debuginfoRed Hat:enterprise_linux:3::ws |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-develRed Hat:enterprise_linux:3::ws |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl-perlRed Hat:enterprise_linux:3::ws |
before 0:0.9.7a-33.17 | 0:0.9.7a-33.17 |
openssl096bRed Hat:enterprise_linux:3::ws |
before 0:0.9.6b-16.22.4 | 0:0.9.6b-16.22.4 |
openssl096b-debuginfoRed Hat:enterprise_linux:3::ws |
before 0:0.9.6b-16.22.4 | 0:0.9.6b-16.22.4 |
opensslRed Hat:enterprise_linux:4::as |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-debuginfoRed Hat:enterprise_linux:4::as |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-develRed Hat:enterprise_linux:4::as |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-perlRed Hat:enterprise_linux:4::as |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl096bRed Hat:enterprise_linux:4::as |
before 0:0.9.6b-22.4 | 0:0.9.6b-22.4 |
openssl096b-debuginfoRed Hat:enterprise_linux:4::as |
before 0:0.9.6b-22.4 | 0:0.9.6b-22.4 |
opensslRed Hat:enterprise_linux:4::desktop |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-debuginfoRed Hat:enterprise_linux:4::desktop |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-develRed Hat:enterprise_linux:4::desktop |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-perlRed Hat:enterprise_linux:4::desktop |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl096bRed Hat:enterprise_linux:4::desktop |
before 0:0.9.6b-22.4 | 0:0.9.6b-22.4 |
openssl096b-debuginfoRed Hat:enterprise_linux:4::desktop |
before 0:0.9.6b-22.4 | 0:0.9.6b-22.4 |
opensslRed Hat:enterprise_linux:4::es |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-debuginfoRed Hat:enterprise_linux:4::es |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-develRed Hat:enterprise_linux:4::es |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-perlRed Hat:enterprise_linux:4::es |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl096bRed Hat:enterprise_linux:4::es |
before 0:0.9.6b-22.4 | 0:0.9.6b-22.4 |
openssl096b-debuginfoRed Hat:enterprise_linux:4::es |
before 0:0.9.6b-22.4 | 0:0.9.6b-22.4 |
opensslRed Hat:enterprise_linux:4::ws |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-debuginfoRed Hat:enterprise_linux:4::ws |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-develRed Hat:enterprise_linux:4::ws |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl-perlRed Hat:enterprise_linux:4::ws |
before 0:0.9.7a-43.4 | 0:0.9.7a-43.4 |
openssl096bRed Hat:enterprise_linux:4::ws |
before 0:0.9.6b-22.4 | 0:0.9.6b-22.4 |
openssl096b-debuginfoRed Hat:enterprise_linux:4::ws |
before 0:0.9.6b-22.4 | 0:0.9.6b-22.4 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
kb.cert.org/vuls/id/911878
secunia.com/advisories/18165
www-1.ibm.com/support/docview.wss?uid=isg1SSRVHMCHMC_C081516_754
marc.info?l=freebsd-hackers&m=110994026421858&w=2
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9747
vupen.com/english/advisories/2005/3002
Show 34 moreShow less
secunia.com/advisories/15348
securityfocus.com/bid/12724
marc.info?l=freebsd-security&m=110994370429609&w=2
redhat.com/support/errata/RHSA-2005-476.html
securitytracker.com/id?1013967
vupen.com/english/advisories/2005/0540
daemonology.net/papers/htt.pdf
redhat.com/support/errata/RHSA-2005-800.html
daemonology.net/hyperthreading-considered-harmful
sunsolve.sun.com/search/document.do?assetkey=1-26-101739-1
marc.info?l=openbsd-misc&m=110995101417256&w=2
nvd.nist.gov/vuln/detail/CVE-2005-0109
github.com/advisories/GHSA-3h63-pxm6-2x4m
access.redhat.com/errata/RHSA-2005:476
access.redhat.com/security/updates/classification
bugzilla.redhat.com/show_bug.cgi?id=136302
bugzilla.redhat.com/show_bug.cgi?id=140061
bugzilla.redhat.com/show_bug.cgi?id=157631
security.access.redhat.com/data/csaf/v2/advisories/2005/rhsa-2005_476.json
access.redhat.com/security/cve/CVE-2004-0975
bugzilla.redhat.com/show_bug.cgi?id=1617338
cve.org/CVERecord?id=CVE-2004-0975
nvd.nist.gov/vuln/detail/CVE-2004-0975
access.redhat.com/security/cve/CVE-2005-0109
bugzilla.redhat.com/show_bug.cgi?id=1617463
cve.org/CVERecord?id=CVE-2005-0109
access.redhat.com/errata/RHSA-2005:800
bugzilla.redhat.com/show_bug.cgi?id=169863
bugzilla.redhat.com/show_bug.cgi?id=170036
security.access.redhat.com/data/csaf/v2/advisories/2005/rhsa-2005_800.json
access.redhat.com/security/cve/CVE-2005-2969
bugzilla.redhat.com/show_bug.cgi?id=430660
cve.org/CVERecord?id=CVE-2005-2969
nvd.nist.gov/vuln/detail/CVE-2005-2969