Vulnerability Details : CVE-2011-2901
Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-address bits.
Vulnerability category: Denial of service
Products affected by CVE-2011-2901
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.1.4:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.2.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.2.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.2.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.0.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.0.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.0.4:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.1.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.2.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2011-2901
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 28 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2011-2901
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | AV:A/AC:L/Au:S/C:N/I:N/A:C |
5.1
|
6.9
|
NIST |
CWE ids for CVE-2011-2901
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-2901
-
http://rhn.redhat.com/errata/RHSA-2011-1212.html
RHSA-2011:1212 - Security Advisory - Red Hat Customer Portal
-
http://security.gentoo.org/glsa/glsa-201309-24.xml
Xen: Multiple vulnerabilities (GLSA 201309-24) — Gentoo security
-
http://www.openwall.com/lists/oss-security/2011/09/02/2
oss-security - Xen Security Advisory 4 (CVE-2011-2901) - Xen 3.3 vaddr validation
-
https://bugzilla.redhat.com/show_bug.cgi?id=728042
728042 – (CVE-2011-2901) CVE-2011-2901 kernel: xen: off-by-one shift in x86_64 __addr_ok()
-
http://secunia.com/advisories/55082
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