SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2013-6400

Xen 4.2.x and 4.3.x, when using Intel VT-d and a PCI device has been assigned, does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur, which causes the TLB entries to not be flushed and allows local guest administrators…

MEDIUM 6.8EPSS 0.66%

Does this matter?

Lower severity and a low EPSS score (0.66%). Track it; it rarely justifies an emergency change on its own.

Description

Xen 4.2.x and 4.3.x, when using Intel VT-d and a PCI device has been assigned, does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur, which causes the TLB entries to not be flushed and allows local guest administrators to cause a denial of service (host crash) or gain privileges via unspecified vectors.

CVSS 2.0
6.8 MEDIUMAV:A/AC:H/Au:N/C:C/I:C/A:C
EPSS
0.66% probability · 50th percentile
CISA KEV
Not listed
Weakness
CWE-264
Affected
xen/xen
Source
secalert@redhat.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.