Vulnerability CVE-2017-17564
Published: 2017-12-12   Modified: 2017-12-13

Description:
An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.

Type:

CWE-388

 (Error Handling)

CVSS2 => (AV:L/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.9/10
10/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
XEN -> XEN 

 References:
http://www.openwall.com/lists/oss-security/2017/12/12/3
http://www.securityfocus.com/bid/102172
http://www.securitytracker.com/id/1040770
https://lists.debian.org/debian-lts-announce/2018/01/msg00003.html
https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
https://security.gentoo.org/glsa/201801-14
https://support.citrix.com/article/CTX232096
https://www.debian.org/security/2018/dsa-4112
https://xenbits.xen.org/xsa/advisory-250.html
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