Vulnerability Details : CVE-2017-10917
Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2017-10917
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-10917
0.47%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 72 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-10917
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.4
|
HIGH | AV:N/AC:L/Au:N/C:C/I:N/A:C |
10.0
|
9.2
|
NIST | |
|
9.1
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
3.9
|
5.2
|
NIST |
CWE ids for CVE-2017-10917
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-10917
-
http://www.debian.org/security/2017/dsa-3969
Debian -- Security Information -- DSA-3969-1 xen
-
https://security.gentoo.org/glsa/201708-03
Gentoo Linux — Error 404 (Not Found)
-
https://xenbits.xen.org/xsa/advisory-221.html
XSA-221 - Xen Security AdvisoriesMailing List;Mitigation;Third Party Advisory
-
http://www.securityfocus.com/bid/99157
Xen 'xen/arch/x86/irq.c' NULL pointer Dereference Remote Denial of Service Vulnerability
-
http://www.securitytracker.com/id/1038731
Xen Event Channel Polling Bug Lets Local Users on a Guest System Cause Denial of Service Conditions on the Host System - SecurityTracker
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