What’s Vulnerable › Vulnerabilities

CVE-2005-0109

• Severity: medium (CVSS 5.6 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2005-03-05 · updated 2026-06-16

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.

Affected products

• FreeBSD: 1.1.5.1, 2.0, 2.0.5, 2.1.0, 2.1.5, 2.1.6 (+85)
• Red Hat Enterprise Linux: 2.1, 3.0, 4.0
• RedHat Enterprise Linux Desktop: 3.0, 4.0
• RedHat Fedora Core: core_3.0
• Sco Openserver: 5.0.7
• Sco Unixware: 7.1.3, 7.1.3_up, 7.1.4
• Sun Solaris: 7.0, 8.0, 9.0, 9.0-x86_update_2, 10.0
• Ubuntu Linux: 4.1, 5.04

References

• http://marc.info/?l=freebsd-hackers&m=110994026421858&w=2
• http://marc.info/?l=freebsd-security&m=110994370429609&w=2
• http://marc.info/?l=openbsd-misc&m=110995101417256&w=2
• http://secunia.com/advisories/15348
• http://secunia.com/advisories/18165
• http://securitytracker.com/id?1013967
• http://sunsolve.sun.com/search/document.do?assetkey=1-26-101739-1
• http://www-1.ibm.com/support/docview.wss?uid=isg1SSRVHMCHMC_C081516_754
• http://www.daemonology.net/hyperthreading-considered-harmful/
• http://www.daemonology.net/papers/htt.pdf
• http://www.kb.cert.org/vuls/id/911878

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