CVE-2012-3516
medium
CVSS v3
—
CVSS v2
6.9
VIR risk
6.9
Description
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2012-3516
Vendor advisory: secalert@redhat.com — http://support.citrix.com/article/CTX134708
Vendor advisory: secalert@redhat.com — http://secunia.com/advisories/50530
Vendor advisory: secalert@redhat.com — http://secunia.com/advisories/50472
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 0 |
| debian | sid | fixed | 0 |
| debian | trixie | fixed | 0 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| citrix | xenserver | {"endIncluding":"6.0.2"} | |
References
- 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
- https://security-tracker.debian.org/tracker/CVE-2012-3516
CWEs
CWE-264
Verify integrity in audit chain (admin only). AS-IS.