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CVE-2020-11741 PUBLISHED

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.

EPSS 0.11% · 29.9th percentile

Risk Scores

EPSS Score
0.11%
29.9th percentile

Affected Products

VendorProductVersions
Ubuntu:20.04:LTSxen*, 4.9.2-0ubuntu2, 4.11.3+24-g14b62ab3e5-1ubuntu2.2
Ubuntu:16.04:LTSxen4.6.0-1ubuntu4.2, 4.6.0-1ubuntu4.3, 4.6.5-0ubuntu1.1
Ubuntu:18.04:LTSxen4.9.0-0ubuntu4, 0, 4.9.2-0ubuntu1

Timeline

References

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