CVE-2017-2583

Impact:
Moderate
Public Date:
2017-01-12
CWE:
CWE-250
Bugzilla:
1414735: CVE-2017-2583 Kernel: Kvm: vmx/svm potential privilege escalation inside guest
Linux kernel built with the Kernel-based Virtual Machine (CONFIG_KVM) support was vulnerable to an incorrect segment selector(SS) value error. The error could occur while loading values into the SS register in long mode. A user or process inside a guest could use this flaw to crash the guest, resulting in DoS or potentially escalate their privileges inside the guest.

Find out more about CVE-2017-2583 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue does not affect the versions of the kernel package as shipped with
Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.

This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 7. Future kernel updates for Red Hat Enterprise Linux 7
may address this issue.

CVSS v2 metrics

Base Score 4.9
Base Metrics AV:A/AC:M/Au:S/C:P/I:P/A:P
Access Vector Adjacent Network
Access Complexity Medium
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial

CVSS v3 metrics

CVSS3 Base Score 6.4
CVSS3 Base Metrics CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector Adjacent Network
Attack Complexity High
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Impact High
Availability Impact High

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 7 (kernel) RHSA-2017:1615 2017-06-28
Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) RHSA-2017:1616 2017-06-28

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Not affected
Red Hat Enterprise Linux 6 kernel Not affected
Red Hat Enterprise Linux 5 kernel Not affected

Acknowledgements

Red Hat would like to thank Xiaohan Zhang (Huawei Inc.) for reporting this issue.
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