CVE-2014-1642: Use After Free
First published: Sun Jan 26 2014(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | =4.2.0 | |
| Xen xen-unstable | =4.2.1 | |
| Xen xen-unstable | =4.2.2 | |
| Xen xen-unstable | =4.2.3 | |
| Xen xen-unstable | =4.3.0 | |
| Xen xen-unstable | =4.3.1 |
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Reference Links
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127580.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127607.html
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
- http://osvdb.org/102406
- http://secunia.com/advisories/56557
- http://security.gentoo.org/glsa/glsa-201407-03.xml
- http://www.openwall.com/lists/oss-security/2014/01/23/4
- http://www.securityfocus.com/bid/65097
- http://www.securitytracker.com/id/1029679
- http://xenbits.xen.org/xsa/advisory-83.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/90649
Frequently Asked Questions
What is the severity of CVE-2014-1642?
CVE-2014-1642 is classified as a high severity vulnerability due to its potential to cause denial of service through memory corruption and hypervisor crashes.
How do I fix CVE-2014-1642?
To fix CVE-2014-1642, users should upgrade to a patched version of Xen, specifically versions 4.2.4 or later, and 4.3.2 or later.
What versions of Xen are affected by CVE-2014-1642?
CVE-2014-1642 affects Xen versions 4.2.0 through 4.2.3 and 4.3.0 through 4.3.1.
Who can exploit CVE-2014-1642?
Local guest administrators can exploit CVE-2014-1642 to cause a denial of service on the hypervisor.
What is the impact of CVE-2014-1642?
The impact of CVE-2014-1642 includes memory corruption and possible crashes of the hypervisor, leading to service interruptions.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/references
- agent/weakness
- agent/last-modified-date
- agent/severity
- agent/event
- agent/first-publish-date
- agent/description
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.2.0
- version/xen xen-unstable/4.2.1
- version/xen xen-unstable/4.2.2
- version/xen xen-unstable/4.2.3
- version/xen xen-unstable/4.3.0
- version/xen xen-unstable/4.3.1