CVE-2012-3516
First published: Fri Nov 23 2012(Updated: )
The GNTTABOP_swap_grant_ref sub-operation in the grant table hypercall in Xen 4.2 and Citrix XenServer 6.0.2 allows local guest kernels or administrators to cause a denial of service (host crash) and possibly gain privileges via a crafted grant reference that triggers a write to an arbitrary hypervisor memory location.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Citrix XenServer | <=6.0.2 | |
| Xen Xen | =4.2.0 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
- http://secunia.com/advisories/50472
- http://secunia.com/advisories/50530
- http://support.citrix.com/article/CTX134708
- http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking
- http://www.openwall.com/lists/oss-security/2012/09/05/11
- http://www.securityfocus.com/bid/55411
- collector/nvd-index
- agent/severity
- agent/author
- agent/weakness
- agent/references
- agent/tags
- agent/type
- agent/description
- agent/event
- agent/first-publish-date
- agent/softwarecombine
- agent/last-modified-date
- agent/remedy
- vendor/citrix
- canonical/citrix xenserver
- version/citrix xenserver/6.0.2
- vendor/xen
- canonical/xen xen
- version/xen xen/4.2.0