Security readout for executives and security teams
This Xen flaw can let an untrusted virtual machine with direct access to a physical PCI device escalate into the host operating system. The business risk is concentrated: environments without PCI passthrough are not vulnerable, but affected virtualization hosts could lose tenant isolation. Exposure is likely limited to Xen hosts that assign DMA-capable physical devices to untrusted guests through PCI passthrough, especially where libvirt or documented alternate preparation methods were used. Systems not using PCI passthrough are stated as not vulnerable. Treat as high priority only where Xen PCI passthrough is used for untrusted guests. For those hosts, the impact is host compromise. For environments without passthrough, the cited advisory says they are not vulnerable. Mitigation focus: Apply Xen XSA-306 updates or downstream vendor security updates.; Prioritize Debian, Fedora, and openSUSE package advisories where relevant.; Avoid PCI passthrough to untrusted guests until remediation is verified..
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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Privilege behavior lookup
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Open ATT&CK lookupCVE-2019-19579 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
- https://xenbits.xen.org/xsa/advisory-306.htmlCVE reference · x_refsource_MISC
- https://www.openwall.com/lists/oss-security/2019/11/26/2CVE reference · x_refsource_MISC
- FEDORA-2019-3d7105bd2aCVE reference · vendor-advisory, x_refsource_FEDORA
- DSA-4602CVE reference · vendor-advisory, x_refsource_DEBIAN
- 20200114 [SECURITY] [DSA 4602-1] xen security updateCVE reference · mailing-list, x_refsource_BUGTRAQ
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.