Vulnerability Details : CVE-2014-1895
Off-by-one error in the flask_security_avc_cachestats function in xsm/flask/flask_op.c in Xen 4.2.x and 4.3.x, when the maximum number of physical CPUs are in use, allows local users to cause a denial of service (host crash) or obtain sensitive information from hypervisor memory by leveraging a FLASK_AVC_CACHESTAT hypercall, which triggers a buffer over-read.
Vulnerability category: Denial of service
Products affected by CVE-2014-1895
- cpe:2.3:o:xen:xen:4.2.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2014-1895
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2014-1895
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.8
|
MEDIUM | AV:A/AC:M/Au:S/C:P/I:N/A:C |
4.4
|
7.8
|
NIST |
CWE ids for CVE-2014-1895
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2014-1895
-
http://xenbits.xen.org/xsa/advisory-85.html
XSA-85 - Xen Security AdvisoriesPatch;Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2014/02/10/6
oss-security - Xen Security Advisory 85 (CVE-2014-1895) - Off-by-one error in FLASK_AVC_CACHESTAT hypercall
-
http://www.openwall.com/lists/oss-security/2014/02/07/12
oss-security - Re: Xen Security Advisory 84 - integer overflow in several XSM/Flask hypercalls
-
http://security.gentoo.org/glsa/glsa-201407-03.xml
Xen: Multiple Vunlerabilities (GLSA 201407-03) — Gentoo security
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http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
[security-announce] SUSE-SU-2014:0373-1: important: Security update for
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