4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
8 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
28.3%
The cumulative Virtuozzo ReadyKernel patch was updated with security fixes. The patch applies to all supported Virtuozzo 7.0 kernels.
Vulnerability id: CVE-2018-1087
A flaw was found in how KVM handled exceptions delivered after Mov SS or Pop SS instructions have encountered a breakpoint. As a result, exceptions passed to the guest kernel could have wrong values on the stack. An unprivileged KVM guest user could use this flaw to crash the guest kernel or, potentially, escalate their privileges in the guest system.
Vulnerability id: CVE-2018-1000199
The implementation of ptrace in the kernel does not handle errors correctly when working with the debug registers. As a result, the hardware breakpoints could become corrupted. An unprivileged user could exploit this flaw to crash the kernel resulting in a denial-of-service, or, potentially, to escalate their privileges in the system.
access.redhat.com/security/cve/cve-2018-1000199
access.redhat.com/security/cve/cve-2018-1087
readykernel.com/patch/Virtuozzo-7/readykernel-patch-20.18-51.1-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.10-51.1-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.15-51.1-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-33.22-51.1-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-37.30-51.1-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-40.4-51.1-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-43.10-51.1-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-46.7-51.1-1.vl7/
4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
8 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
28.3%