Vulnerability Details : CVE-2017-2583
The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a "MOV SS, NULL selector" instruction, which allows guest OS users to cause a denial of service (guest OS crash) or gain guest OS privileges via a crafted application.
Vulnerability category: Denial of service
Products affected by CVE-2017-2583
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-2583
0.18%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 54 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-2583
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
8.4
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.5
|
5.9
|
NIST |
References for CVE-2017-2583
-
https://bugzilla.redhat.com/show_bug.cgi?id=1414735
1414735 – (CVE-2017-2583) CVE-2017-2583 Kernel: Kvm: vmx/svm potential privilege escalation inside guestIssue Tracking;Patch
-
http://www.debian.org/security/2017/dsa-3791
Debian -- Security Information -- DSA-3791-1 linux
-
https://usn.ubuntu.com/3754-1/
USN-3754-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://access.redhat.com/errata/RHSA-2017:1615
RHSA-2017:1615 - Security Advisory - Red Hat Customer Portal
-
https://github.com/torvalds/linux/commit/33ab91103b3415e12457e3104f0e4517ce12d0f3
KVM: x86: fix emulation of "MOV SS, null selector" · torvalds/linux@33ab911 · GitHubIssue Tracking;Patch;Third Party Advisory
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=33ab91103b3415e12457e3104f0e4517ce12d0f3
kernel/git/torvalds/linux.git - Linux kernel source treeIssue Tracking;Third Party Advisory
-
http://www.securityfocus.com/bid/95673
Linux Kernel CVE-2017-2583 Privilege Escalation VulnerabilityThird Party Advisory;VDB Entry
-
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5
Release Notes;Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2017/01/19/2
oss-security - CVE-2017-2583 Kernel: Kvm: vmx/svm potential privilege escalation inside guestMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2017:1616
RHSA-2017:1616 - Security Advisory - Red Hat Customer Portal
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