Security readout for executives and security teams
This flaw affects old Debian systems using Linux-VServer patches. A vserver boundary may fail to keep a user inside the expected file area, allowing access to host files outside the vserver. The business concern is loss of isolation on legacy hosting or lab systems, not broad exposure in modern Linux deployments. Exposure appears limited to Debian GNU/Linux systems running the old Linux 2.4 kernel-patch-vserver package with util-vserver. Modern container platforms are not named in the sources. Legacy servers, archived images, or long-lived hosting infrastructure are the main places to check. Treat this as a targeted legacy-infrastructure risk. It is not a current mass-exploitation signal from the provided evidence, but any affected multi-tenant or sensitive host should be prioritized because the flaw weakens host isolation. Mitigation focus: Apply Debian security guidance from DSA-1011 where the package is still present.; Upgrade kernel-patch-vserver beyond the affected versions named by Debian.; Retire unsupported Debian Linux 2.4 vserver hosts where practical..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2005-4347 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- debian-vserver-chrootbarrier-gain-access(25406)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
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