Vulnerability Database

383,304

Total vulnerabilities in the database

CVE-2005-0109 — freebsd / freebsd

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.

  • Published: Mar 5, 2005
  • Updated: Sep 13, 2026
  • CVE: CVE-2005-0109
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v2:

  • Severity: Medium
  • Score: 4.7
  • AV:L/AC:M/Au:N/C:C/I:N/A:N

No CWE or OWASP classifications available.

Software Affected versions
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 = 3.0-releng
freebsd / freebsd = 3.1
freebsd / freebsd = 3.2
freebsd / freebsd = 3.3
freebsd / freebsd = 3.4
freebsd / freebsd = 3.5
freebsd / freebsd = 3.5-stable
freebsd / freebsd = 3.5.1
freebsd / freebsd = 3.5.1-release
freebsd / freebsd = 3.5.1-stable
freebsd / freebsd = 4.0
freebsd / freebsd = 4.0-alpha
freebsd / freebsd = 4.0-releng
freebsd / freebsd = 4.1
freebsd / freebsd = 4.1.1
freebsd / freebsd = 4.1.1-release
freebsd / freebsd = 4.1.1-stable
freebsd / freebsd = 4.2
freebsd / freebsd = 4.2-stable
freebsd / freebsd = 4.3
freebsd / freebsd = 4.3-release
freebsd / freebsd = 4.3-release_p38
freebsd / freebsd = 4.3-releng
freebsd / freebsd = 4.3-stable
freebsd / freebsd = 4.4
freebsd / freebsd = 4.4-release_p42
freebsd / freebsd = 4.4-releng
freebsd / freebsd = 4.4-stable
freebsd / freebsd = 4.5
freebsd / freebsd = 4.5-release
freebsd / freebsd = 4.5-release_p32
freebsd / freebsd = 4.5-releng
freebsd / freebsd = 4.5-stable
freebsd / freebsd = 4.6
freebsd / freebsd = 4.6-release
freebsd / freebsd = 4.6-release_p20
freebsd / freebsd = 4.6-releng
freebsd / freebsd = 4.6-stable
freebsd / freebsd = 4.6.2
freebsd / freebsd = 4.7
freebsd / freebsd = 4.7-release
freebsd / freebsd = 4.7-release_p17
freebsd / freebsd = 4.7-releng
freebsd / freebsd = 4.7-stable
freebsd / freebsd = 4.8
freebsd / freebsd = 4.8-pre-release
freebsd / freebsd = 4.8-release_p6
freebsd / freebsd = 4.8-releng
freebsd / freebsd = 4.9
freebsd / freebsd = 4.9-pre-release
freebsd / freebsd = 4.9-releng
freebsd / freebsd = 4.10
freebsd / freebsd = 4.10-release
freebsd / freebsd = 4.10-release_p8
freebsd / freebsd = 4.10-releng
freebsd / freebsd = 4.11-release_p3
freebsd / freebsd = 4.11-releng
freebsd / freebsd = 4.11-stable
freebsd / freebsd = 5.0
freebsd / freebsd = 5.0-alpha
freebsd / freebsd = 5.0-release_p14
freebsd / freebsd = 5.0-releng
freebsd / freebsd = 5.1
freebsd / freebsd = 5.1-alpha
freebsd / freebsd = 5.1-release
freebsd / freebsd = 5.1-release_p5
freebsd / freebsd = 5.1-releng
freebsd / freebsd = 5.2
freebsd / freebsd = 5.2.1-release
freebsd / freebsd = 5.2.1-releng
freebsd / freebsd = 5.3
freebsd / freebsd = 5.3-release
freebsd / freebsd = 5.3-releng
freebsd / freebsd = 5.3-stable
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
sco / unixware = 7.1.3_up
sco / unixware = 7.1.4
sun / solaris = 7.0
sun / solaris = 8.0
sun / solaris = 9.0
sun / solaris = 9.0-x86_update_2
sun / solaris = 10.0
ubuntu / ubuntu_linux = 4.1
ubuntu / ubuntu_linux = 5.04

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.