Xen
CVE-2024-45819
MEDIUM
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Primary rating from Vendor (xen) · only source for this CVE.
CVSS VectorVendor: xen
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
1DescriptionCVE.org
PVH guests have their ACPI tables constructed by the toolstack. The construction involves building the tables in local memory, which are then copied into guest memory. While actually used parts of the local memory are filled in correctly, excess space that is being allocated is left with its prior contents.
AnalysisAI
PVH guests have their ACPI tables constructed by the toolstack. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Incorrect Default Permissions vulnerability could allow attackers to access resources due to overly permissive default settings.
Technical ContextAI
This vulnerability is classified as Incorrect Default Permissions (CWE-276), which allows attackers to access resources due to overly permissive default settings. PVH guests have their ACPI tables constructed by the toolstack. The construction involves building the tables in local memory, which are then copied into guest memory. While actually used parts of the local memory are filled in correctly, excess space that is being allocated is left with its prior contents. Affected products include: Xen.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Set restrictive default permissions, follow principle of least privilege, review defaults during deployment.
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A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) wa
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The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x and earlier, allows
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (hos
x86 pv: Insufficient care with non-coherent mappings T[his CNA information record relates to multiple CVEs; the text exp
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Same weakness CWE-276 – Incorrect Default Permissions
View allSame technique Privilege Escalation
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External POC / Exploit Code
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