National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-15470 Detail

Current Description

An issue was discovered in Xen through 4.11.x. The logic in oxenstored for handling writes depended on the order of evaluation of expressions making up a tuple. As indicated in section 7.7.3 "Operations on data structures" of the OCaml manual, the order of evaluation of subexpressions is not specified. In practice, different implementations behave differently. Thus, oxenstored may not enforce the configured quota-maxentity. This allows a malicious or buggy guest to write as many xenstore entries as it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 6.5 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://xenbits.xen.org/xsa/advisory-272.html Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html
https://security.gentoo.org/glsa/201810-06 Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
4.11.0


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-15470
NVD Published Date:
08/17/2018
NVD Last Modified:
11/13/2018