CVE-2012-3516
Published: 23 November 2012
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.
Priority
Medium
Status
| Package | Release | Status |
|---|---|---|
|
xen Launchpad, Ubuntu, Debian |
Upstream |
Needed
|
|
Patches: Upstream: http://xenbits.xen.org/hg/xen-unstable.hg/rev/93e5a791d076 |
||
|
xen-3.1 Launchpad, Ubuntu, Debian |
Upstream |
Not vulnerable
|
|
xen-3.2 Launchpad, Ubuntu, Debian |
Upstream |
Not vulnerable
|
|
xen-3.3 Launchpad, Ubuntu, Debian |
Upstream |
Not vulnerable
|
Notes
| Author | Note |
|---|---|
| seth-arnold | Hypercall was added in 4.2 Warning: for raring, version '4.2.0-1ubuntu2' is in -proposed is this version vulnerable or patched? |
| mdeslaur | introduced by http://xenbits.xen.org/hg/xen-unstable.hg/rev/d115844ebfbb fixed by http://xenbits.xen.org/hg/xen-unstable.hg/rev/93e5a791d076 |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3516
- http://www.openwall.com/lists/oss-security/2012/09/05/11
- http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking
- http://support.citrix.com/article/CTX134708
- http://secunia.com/advisories/50530
- http://secunia.com/advisories/50472
- NVD
- Launchpad
- Debian