Vulnerability Details : CVE-2014-1642
The IRQ setup in Xen 4.2.x and 4.3.x, when using device passthrough and configured to support a large number of CPUs, frees certain memory that may still be intended for use, which allows local guest administrators to cause a denial of service (memory corruption and hypervisor crash) and possibly execute arbitrary code via vectors related to an out-of-memory error that triggers a (1) use-after-free or (2) double free.
Vulnerability category: Memory CorruptionExecute codeDenial of service
Products affected by CVE-2014-1642
- 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-2014-1642
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 34 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2014-1642
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.4
|
MEDIUM | AV:L/AC:M/Au:N/C:P/I:P/A:P |
3.4
|
6.4
|
NIST |
CWE ids for CVE-2014-1642
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2014-1642
-
http://xenbits.xen.org/xsa/advisory-83.html
XSA-83 - Xen Security AdvisoriesVendor Advisory
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http://www.securitytracker.com/id/1029679
Xen IRQ Setup Use-After-Free Lets Local Guest Users Gain Elevated Privileges on the Host System - SecurityTracker
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http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127607.html
[SECURITY] Fedora 20 Update: xen-4.3.1-8.fc20
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http://www.securityfocus.com/bid/65097
Xen Use After Free Memory Corruption Vulnerability
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http://security.gentoo.org/glsa/glsa-201407-03.xml
Xen: Multiple Vunlerabilities (GLSA 201407-03) — Gentoo security
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http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127580.html
[SECURITY] Fedora 19 Update: xen-4.2.3-14.fc19
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https://exchange.xforce.ibmcloud.com/vulnerabilities/90649
Xen IRQ setup code execution CVE-2014-1642 Vulnerability Report
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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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http://www.openwall.com/lists/oss-security/2014/01/23/4
oss-security - Xen Security Advisory 83 (CVE-2014-1642) - Out-of-memory condition yielding memory corruption during IRQ setup
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