Ubuntu.comUB:CVE-2018-14678CVE-2018-14678
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
5.1%
An issue was discovered in the Linux kernel through 4.17.11, as used in Xen
through 4.11.x. The xen_failsafe_callback entry point in
arch/x86/entry/entry_64.S does not properly maintain RBX, which allows
local users to cause a denial of service (uninitialized memory usage and
system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a
guest OS crash or possibly gain privileges.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < 4.15.0-47.50 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1035.37 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1035.37~16.04.1 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-azure | < 4.18.0-1011.11~18.04.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-azure | < 4.15.0-1041.45~14.04.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1041.45 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-azure-edge | < 4.18.0-1011.11~18.04.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure-edge | < 4.15.0-1041.45 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-gcp | < 4.15.0-1029.31 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-gcp | < 4.15.0-1029.31~16.04.1 | UNKNOWN |
References
git.kernel.org/linus/b3681dd548d06deb2e1573890829dff4b15abf46
launchpad.net/bugs/cve/CVE-2018-14678
nvd.nist.gov/vuln/detail/CVE-2018-14678
security-tracker.debian.org/tracker/CVE-2018-14678
ubuntu.com/security/notices/USN-3931-1
ubuntu.com/security/notices/USN-3931-2
www.cve.org/CVERecord?id=CVE-2018-14678
xenbits.xen.org/xsa/advisory-274.html
Related
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
5.1%