CVE-2012-3496
First published: Fri Nov 23 2012(Updated: )
XENMEM_populate_physmap in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when translating paging mode is not used, allows local PV OS guest kernels to cause a denial of service (BUG triggered and host crash) via invalid flags such as MEMF_populate_on_demand.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| XenServer | <=6.0.2 | |
| Xen xen-unstable | =4.0.0 | |
| Xen xen-unstable | =4.1.0 | |
| Xen xen-unstable | =4.2.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
- http://lists.xen.org/archives/html/xen-announce/2012-09/msg00002.html
- http://secunia.com/advisories/50472
- http://secunia.com/advisories/50530
- http://secunia.com/advisories/51413
- http://secunia.com/advisories/55082
- http://security.gentoo.org/glsa/glsa-201309-24.xml
- http://securitytracker.com/id?1027481
- http://support.citrix.com/article/CTX134708
- http://wiki.xen.org/wiki/Security_Announcements#XSA-14_XENMEM_populate_physmap_DoS_vulnerability
- http://www.debian.org/security/2012/dsa-2544
- http://www.openwall.com/lists/oss-security/2012/09/05/7
- http://www.osvdb.org/85200
- http://www.securityfocus.com/bid/55412
- https://bugzilla.redhat.com/show_bug.cgi?id=854590
- https://exchange.xforce.ibmcloud.com/vulnerabilities/78267
- https://security.gentoo.org/glsa/201604-03
Frequently Asked Questions
What is the severity of CVE-2012-3496?
CVE-2012-3496 is considered to be of high severity due to its potential to cause a denial of service attack leading to host crashes.
How do I fix CVE-2012-3496?
To fix CVE-2012-3496, upgrade to Xen version 4.3 or later, or Citrix XenServer 6.1 or later.
What systems are affected by CVE-2012-3496?
CVE-2012-3496 affects Xen versions 4.0, 4.1, 4.2, and Citrix XenServer 6.0.2 and earlier.
What types of attacks can be executed with CVE-2012-3496?
CVE-2012-3496 allows local PV OS guest kernels to cause a denial of service by triggering a bug through invalid flags.
Is there a workaround for CVE-2012-3496?
There is no widely recommended workaround for CVE-2012-3496, and upgrading to a fixed version is the best option.
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/severity
- agent/weakness
- agent/remedy
- agent/references
- agent/description
- agent/author
- agent/event
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/citrix
- canonical/xenserver
- version/xenserver/6.0.2
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.0.0
- version/xen xen-unstable/4.1.0
- version/xen xen-unstable/4.2.0