GSD-2020-15564
Vulnerability from gsd - Updated: 2023-12-13 01:21Details
An issue was discovered in Xen through 4.13.x, allowing Arm guest OS users to cause a hypervisor crash because of a missing alignment check in VCPUOP_register_vcpu_info. The hypercall VCPUOP_register_vcpu_info is used by a guest to register a shared region with the hypervisor. The region will be mapped into Xen address space so it can be directly accessed. On Arm, the region is accessed with instructions that require a specific alignment. Unfortunately, there is no check that the address provided by the guest will be correctly aligned. As a result, a malicious guest could cause a hypervisor crash by passing a misaligned address. A malicious guest administrator may cause a hypervisor crash, resulting in a Denial of Service (DoS). All Xen versions are vulnerable. Only Arm systems are vulnerable. x86 systems are not affected.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-15564",
"description": "An issue was discovered in Xen through 4.13.x, allowing Arm guest OS users to cause a hypervisor crash because of a missing alignment check in VCPUOP_register_vcpu_info. The hypercall VCPUOP_register_vcpu_info is used by a guest to register a shared region with the hypervisor. The region will be mapped into Xen address space so it can be directly accessed. On Arm, the region is accessed with instructions that require a specific alignment. Unfortunately, there is no check that the address provided by the guest will be correctly aligned. As a result, a malicious guest could cause a hypervisor crash by passing a misaligned address. A malicious guest administrator may cause a hypervisor crash, resulting in a Denial of Service (DoS). All Xen versions are vulnerable. Only Arm systems are vulnerable. x86 systems are not affected.",
"id": "GSD-2020-15564",
"references": [
"https://www.suse.com/security/cve/CVE-2020-15564.html",
"https://www.debian.org/security/2020/dsa-4723",
"https://ubuntu.com/security/CVE-2020-15564"
]
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"id": "GSD-2020-15564",
"modified": "2023-12-13T01:21:43.202722Z",
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"lastModifiedDate": "2022-05-03T13:57Z",
"publishedDate": "2020-07-07T13:15Z"
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}
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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