6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
9.9 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.9 High
AI Score
Confidence
High
0.007 Low
EPSS
Percentile
81.0%
Debian Security Advisory DSA-4236-1 [email protected]
https://www.debian.org/security/ Moritz Muehlenhoff
June 27, 2018 https://www.debian.org/security/faq
Package : xen
CVE ID : CVE-2018-12891 CVE-2018-12892 CVE-2018-12893
Multiple vulnerabilities have been discovered in the Xen hypervisor:
CVE-2018-12891
It was discovered that insufficient validation of PV MMU operations
may result in denial of service.
CVE-2018-12892
It was discovered that libxl fails to honour the 'readonly' flag on
HVM-emulated SCSI disks.
CVE-2018-12893
It was discovered that incorrect implementation of debug exception
checks could result in denial of service.
For the stable distribution (stretch), these problems have been fixed in
version 4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u9.
We recommend that you upgrade your xen packages.
For the detailed security status of xen please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/xen
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
9.9 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.9 High
AI Score
Confidence
High
0.007 Low
EPSS
Percentile
81.0%