Vulnerability Details : CVE-2016-9637
The (1) ioport_read and (2) ioport_write functions in Xen, when qemu is used as a device model within Xen, might allow local x86 HVM guest OS administrators to gain qemu process privileges via vectors involving an out-of-range ioport access.
Products affected by CVE-2016-9637
- cpe:2.3:a:citrix:xenserver:6.2.0:sp1:*:*:*:*:*:*
- cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xenserver:6.5:sp1:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-9637
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-9637
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
3.7
|
LOW | AV:L/AC:H/Au:N/C:P/I:P/A:P |
1.9
|
6.4
|
NIST | |
7.5
|
HIGH | CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
0.8
|
6.0
|
NIST |
CWE ids for CVE-2016-9637
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-9637
-
http://rhn.redhat.com/errata/RHSA-2016-2963.html
RHSA-2016:2963 - Security Advisory - Red Hat Customer Portal
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https://support.citrix.com/article/CTX219136
Citrix XenServer Security Update for CVE-2016-9637
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http://xenbits.xen.org/xsa/advisory-199.html
XSA-199 - Xen Security Advisories
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http://www.securitytracker.com/id/1037397
Xen ioport Array Overflow Lets Local Administrative Users on a Guest System Gain Elevated Privileges on the QEMU Process - SecurityTracker
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http://www.securityfocus.com/bid/94699
Xen CVE-2016-9637 Privilege Escalation Vulnerability
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https://security.gentoo.org/glsa/201612-56
Xen: Multiple vulnerabilities (GLSA 201612-56) — Gentoo security
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https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html
[SECURITY] [DLA 1270-1] xen security update
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