Vulnerability CVE-2015-8553

Vulnerability Name:

CVE-2015-8553 (CCN-112537)

Assigned:

2015-03-31

Published:

2015-03-31

Updated:

2019-08-13

Summary:

Xen allows guest OS users to obtain sensitive information from uninitialized locations in host OS kernel memory by not enabling memory and I/O decoding control bits.
Note: this vulnerability exists because of an incomplete fix for CVE-2015-0777.

CVSS v3 Severity:

6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Changed
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): None Availibility (A): None

CVSS v2 Severity:

2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
1.6 Low (Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N/E:U/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
1.6 Low (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N/E:U/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-200

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2015-8553

Source: CCN
Type: Xen Security Advisory XSA-120
Non-maskable interrupts triggerable by guests

Source: CONFIRM
Type: Patch, Vendor Advisory
http://xenbits.xen.org/xsa/advisory-120.html

Source: XF
Type: UNKNOWN
xen-cve20158553-info-disc(112537)

Source: BUGTRAQ
Type: UNKNOWN
20190813 [SECURITY] [DSA 4497-1] linux security update

Source: DEBIAN
Type: UNKNOWN
DSA-4497

Source: CCN
Type: IBM Security Bulletin 1284100 (Vyatta 5600)
Vyatta 5600 vRouter Software Patches - Release 1801-ze

Vulnerable Configuration:

Configuration 1:

cpe:/o:xen:xen:-:*:*:*:*:*:*:*

Configuration 2:

cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:xensource:xen:3.3.0:*:*:*:*:*:*:*

OR cpe:/a:xensource:xen:4.0:*:*:*:*:*:*:*

OR cpe:/a:xensource:xen:4.1:*:*:*:*:*:*:*

OR cpe:/a:xensource:xen:3.4:*:*:*:*:*:*:*

AND

cpe:/h:ibm:vyatta_5600:*:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.bionic:def:201585530000000	V	CVE-2015-8553 on Ubuntu 18.04 LTS (bionic) - medium.	2016-04-13
oval:com.ubuntu.artful:def:20158553000	V	CVE-2015-8553 on Ubuntu 17.10 (artful) - medium.	2016-04-13
oval:com.ubuntu.trusty:def:20158553000	V	CVE-2015-8553 on Ubuntu 14.04 LTS (trusty) - medium.	2016-04-13
oval:com.ubuntu.xenial:def:201585530000000	V	CVE-2015-8553 on Ubuntu 16.04 LTS (xenial) - medium.	2016-04-13
oval:com.ubuntu.bionic:def:20158553000	V	CVE-2015-8553 on Ubuntu 18.04 LTS (bionic) - medium.	2016-04-13
oval:com.ubuntu.xenial:def:20158553000	V	CVE-2015-8553 on Ubuntu 16.04 LTS (xenial) - medium.	2016-04-13
oval:com.ubuntu.disco:def:201585530000000	V	CVE-2015-8553 on Ubuntu 19.04 (disco) - medium.	2016-04-13
oval:com.ubuntu.cosmic:def:20158553000	V	CVE-2015-8553 on Ubuntu 18.10 (cosmic) - medium.	2016-04-13
oval:com.ubuntu.cosmic:def:201585530000000	V	CVE-2015-8553 on Ubuntu 18.10 (cosmic) - medium.	2016-04-13
oval:com.ubuntu.precise:def:20158553000	V	CVE-2015-8553 on Ubuntu 12.04 LTS (precise) - medium.	2016-04-13

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