NetSight
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high8.8

CVE-2020-11741

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (with active profiling) to obtain sensitive information about other guests, …

Impact

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (with active profiling) to obtain sensitive information about other guests, cause a denial of service, or possibly gain privileges. For guests for which "active" profiling was enabled by the administrator, the xenoprof code uses the standard Xen shared ring structure. Unfortunately, this code did not treat the guest as a potential adversary: it trusts the guest not to modify buffer size information or modify head / tail pointers in unexpected ways. This can crash the host (DoS). Privilege escalation cannot be ruled out.

Affected products

VendorProductAffected versions
XenXen
through 4.13.0
Version 4.13.0
FedoraprojectFedora
Versions 30, 31, 32
DebianDebian Linux
Version 10.0
OpensuseLeap
Version 15.1

Weakness classification

CWE-909

References